This is one area where Mariner's retro style really makes itself felt.
Passages, the ship's daily newsletter, lists some classic daytime activities like quizzes, cooking demonstrations, Bridge and board game sessions, on-deck paddle tennis, Ping-Pong and shuffleboard tournaments, ballroom dancing, scarf-tying lessons and even a daily "Bingo Bonanza."
There are also occasional enrichment lectures, daily art auctions and "Popcorn Movie" screenings of recently-released films in the ship's main show lounge, the Constellation Theatre.
Afternoon tea in the ship's Horizon Lounge is a perennially popular diversion (particularly when Mariner's pastry chef titivates the taste buds with his Chocoholic range of cakes). And proceedings are further enlivened by a bout of Teatime Trivia.
In the evening, the excellent (and never too loud) Nature Rhythm Trio entertains passengers over pre-dinner drinks and canapes in the Mariner Lounge while the ship's pianist tinkles away in the top-deck Observation Lounge. Meanwhile, passengers prepare to pay extra tuck into caviar and Champagne. (Prices vary according to quantity and quality.)
Most nights around 9:30, the smart and extensively refurbished Constellation Theatre hosts a cabaret slot by a solo performer or a production show specially designed for RSSC. "Cirque Rock 'n Roll" is a spectacular event in which acrobats perform aerial routines choreographed to music by Michael Jackson, Pink, Queen and other rock legends.
If you prefer dancing yourself to watching others do it, the Stars Lounge nightclub on Deck 6 is the place to be, as it hosts live music and a late-night Jukebox Disco. The Horizon Lounge is the place to go through your Latino dance paces or get on down to '60s tunes played by the Regent Signature Orchestra.
Elsewhere on the ship, you might find a gentle "Name that Tune" competition in which to participate or a "Karaoke Dance Party" in full swing -- and there's always plenty of action in the ship's small but elegant casino on Deck 7. It has craps, roulette, poker and blackjack tables and a small number of slot machines.
Mariner's newly refurbished public rooms mirror the ship's classic style and casual elegance, and its internal layout is beautifully simple.
Right at the top of the ship on Deck 12 is a lovely Observation Lounge which, as its name suggests, offers panoramic 270-degree sea views and has a glamorous new 1930s Hollywood look, its pale ivory and gold seating accented with splashes of deep ruby on the carpet.
One deck down from there, you'll find La Veranda/Sette Mari, the Pool Grill and the decent-sized, recently re-tiled swimming pool, flanked by showers and three whirlpools with a view.
The rest of Mariner's public rooms span decks 5 to 7. Deck 7 hosts the casino and a well-stocked and fairly reasonably priced boutique, where you can pick up any forgotten essentials like sun cream, as well as luxury goods like perfume, handbags, collared shirts and other goodies. This deck also holds the Canyon Ranch Spa (see Spa & Fitness section).
One deck Down on Deck 6, you'll find the ship's main entertainment area, with the stylish two-tier Constellation Theatre at the forward end and the comfortable Horizon Lounge at the aft.
Both received major facelifts during the ship's 2014 refit. The theatre gained a new LED wall, which acts as a spectacular backdrop for productions. The theater has also been upholstered and re-carpeted to provide maximum comfort for showgoers, and it boasts new wall coverings, cocktail tables, wall sconces, banquette seats and chairs.
Meanwhile, the Horizon Lounge has gained a new stone-fronted bar and has been enhanced by chic new furnishings and lighting, deep new carpeting and lustrous wall coverings.
The Stars Lounge nightclub, set midship on Deck 6, now has a dramatic new look and is clad in sophisticated shades of plum, smoky gray, gold, black and cream. Highlights include a new stone-topped bar, wool carpets, leather seats, dark hardwood panelling and hammered-copper accents.
Deck 6 also holds the ship's well-stocked (and permanently accessible) library and Internet Center. (Incidentally, Wi-Fi and Internet access are now included in Regent's fares as part of line's multimillion-dollar investment in upgrading connectivity. From November 2014, passengers booking Concierge-level suites or higher will receive up to 500 minutes of free Wi-Fi. Exactly how much you get depends on which category of suite you book.)
Also located on Deck 6 are a card and conference room, Signatures restaurant, the ship's Art Auction displays and the Connoisseurs Club (a cozy venue for lovers of fine liqueurs), as well as the Garden Promenade, an airy, pleasant midship venue for reading, relaxing and enjoying delightfully old-fashioned pursuits like putting together jigsaw puzzles.
Our whistlestop tour of the vessel ends on Deck 5, where, at the bottom of the main atrium, you'll find the ship's reception and tours desks, as well as the lower level of the Constellation Theatre, the Compass Rose Restaurant (which spans the full width of the ship and offers sea views on both sides) and the Prime Seven steakhouse.
This deck also holds the ship's loveliest bar, the Mariner Lounge. With its soft lighting, tinkling piano and vast, feather-soft armchairs, it's THE place to enjoy a pre-dinner cocktail. This has also been refurbished with a new bar, stone flooring and some pretty lamps and tables. A highlight is the vast "birdcage" set at one end of the bar, containing a dazzling candelabra.
Mariner's new look isn't confined to the indoor areas; the ship's exterior decks and alfresco lounges also got a makeover. New teak has been installed on the balconies of all 350 suites and teak decking resurfaced to "good as new" standard. Outdoor areas gained elegant new all-weather sofas, chairs and loungers, too.
The Canyon Ranch Spa Club on Deck 7 now has new steam rooms and stone flooring, as well as refurbished changing rooms. And the ship's Fitness Center was equipped with brand-new state-of-the-art exercise equipment in the 2014 refit.
Spa facilities include a roomy salon for hairdressing, manicures, pedicures and waxing.
The adjacent spa offers a sauna and steam bath, speciality facials (from $177 for 50 minutes to $290 for 80 minutes) and a similarly priced range of massages and body treatments, including organic seaweed leaf body wraps, coffee-based skin scrubs and body polishing treatments that involve crushed bamboo pulp mixed with oils of ginger, fir and wild lime.
For those who feel they must work hard in order to deserve all that pampering, the fitness center is open from 7 a.m. to 7 p.m. and has a good range of equipment, including four treadmills, resistance machines and cross trainers. An exercise program is offered daily, starting at 7 a.m., with "Walk a Mile." Other options include yoga, "Legs Bums and Tums" and other classes (all free).
Some of these activities take place in the spa's aerobics room, while others are based on the top deck (12), which has a jogging track, paddle tennis court, golf nets, a putting green and areas for playing bocce and shuffleboard.