MSC Seaside vs. Seaview

These mega-ships each have 20 decks, 2,066 cabins and share almost identical layouts with room for 4,132 passengers at double occupancy. Both vessels are registered in Panama.

Here's what you can expect in terms of dining on these two ships.

• Two main dining rooms: offering set-seating and anytime dining

• Two buffets: rare for a ship, featuring a main buffet and a more family-friendly one

• Asian Market Kitchen by Roy Yamaguchi: Asian-fusion, sushi and Teppanyaki for a fee

• Butcher's Cut: extra-fee steakhouse

• Venchi 1878 Chocolate Bar: homemade chocolates, hot chocolate and other sweets for a fee

• Venchi 1878 Gelato & Creperie: added-fee alfresco gelato and crepes

One major difference between the two vessels is that, while both have specialty seafood restaurant Ocean Cay, only Seaview's outpost boasts a menu created by renowned chef Ramon Freixa. Although the Michelin-starred chef has been tapped to create dishes for the main dining rooms and MSC Yacht Club on other ships in the fleet, he will have a dedicated restaurant on Seaview featuring a number of dishes including his personal favourite -- signature roast sea bass with rosemary salt.

Another difference is that Seaside's for-fee French eatery, Bistrot La Boheme, is dubbed L'Atelier Bistrot onboard Seaview. Although the names differ, the experience is similar, if not identical.

Passengers craving a cold one, a glass of wine or a cocktail won't have to venture far, no matter where they are on either of these ships. Here's a list of the onboard bars on both ships

• Seaside Bar: atrium bar

• Shine Bar: atrium bar

• Champagne Bar: Champagne bar

• Garage Club: Nightclub/disco bar

• Haven Lounge: bar for the ships' secondary theater

• Seaview Lounge: bar serving the Seaview Lounge

• Sports Bar: bar and lounge area featuring booze and televised sports

• Top Sail Lounge: exclusive lounge and bar area for passengers booked in the MSC Yacht Club

• Wine & Cocktails: bar located at the center of the ships' specialty restaurant hub

• Aurea Bar: pool bar serving Aurea spa passengers and those booked in the MSC Yacht Club

• Miramar Bar: juice bar also offering ice cream sundaes and panoramic views

In an effort to make Seaview a bit less North American than its sister, some of the pools and bars will have different names:

MSC Seaside

• Miami Casino Bar: casino bar

• South Beach Bar: bar serving the South Beach Pool

• Miami Beach Bar: bar serving ice cream (and alcohol) by the Miami Beach Pool

• Jungle Bar: jungle-themed bar serving the Jungle Pool

MSC Seaview

• Platinum Casino Bar: casino bar

• Sunset Beach Bar: bar serving the Sunset Beach Pool

• Panorama Beach Bar: bar serving ice cream (and alcohol) by the Panorama Beach Pool

• Jungle Beach Bar: jungle-themed bar serving the Jungle Beach Pool

In addition to standard cabin types like inside, outside, balcony and suite, both ships in the Seaside Class have added some twists.

• Flexible Modular Cabins: connecting cabins ideal for families or groups traveling together

• Terraced Balcony Cabins: cabins with balconies similar to terraces that overlook the promenade

• Aft Corner Suites: beach condo-like suites, featuring large balconies with panoramic views

• MSC Yacht Club: exclusive-access cabins with a private dining room and 24-hour butler service

Cruisers wanting to stay busy can check out a Formula One simulator, dual-lane bowling alley, 4D cinema and an arcade on both ships.

In addition, both vessels showcase the line's newfound commitment to technology with their stunning atrium areas and the MSCForMe app and wristband system, which functions like a room key and onboard charge card and even allows you to track your children and make reservations for shows and dinner.

What's different, though, are the ships' theater productions. Each vessel offers seven shows on a rotational basis; here's what you can expect.

MSC Seaside

• Peter Punk: a funky, updated spin on the classic "Peter Pan" tale

• The Dream: a trippy steampunk-fairytale hybrid where performers sing Disney songs

• My Life in Music: a compilation of famous movie soundtracks, performed on stage

• The Wizard: stunning illusions, wrapped in a dark atmosphere

• Timeless: travel to different eras, past, present and future via a mad scientist's time machine

• Fly: rhythm and amazing music, accompanied by singing and dancing

• Butterflies: abridge version of Puccini's "Madame Butterfly"

MSC Seaview

• Simply the Best: rock, pop and soul tribute to Tina Turner

• Eclipse: Pink Floyd tribute with a psychedelic feel

• Bizarre: acrobatics meets singing, with a French flair

• Animalia: an enchanting performance with an animal theme

• Fantasia: a celebration of the imagination and all things dreamlike

• Illusion: flamenco with a modern twist

• Emozioni: an elegant performance of popular Italian music

The ships feature five waterslides each, including two racing slides and one that offers slideboarding (where passengers use their boards to select colors that light up inside the slide as they glide through it, sort of like Guitar Hero or Dance Dance Revolution). There's also a climbing structure for kids, similar to a ropes course; an outdoor movie screen; two of the four longest ziplines at sea (two on each ship); and the Bridge of Sighs, a viewing platform that looks out over the aft of the ship and ties in with the Seaside Class' high ratio of outdoor to indoor space.

Seaview has seen the continuation of MSC's partnership with children's brands LEGO and Chicco, which also appear on Seaside as the primary outfitters of onboard toys. Both ships' children's facilities feature colorful, modern spaces and activities (think scavenger hunts, arts and crafts, 3D printing, video games and dance parties) that rival what's offered by some of the cruise industry's most well-known cruise lines. MSC mascot Doremi and his family also make appearances on both ships.

MSC Seaside sails Eastern and Western Caribbean voyages from Miami, while Seaview cruises to the Mediterranean from Genoa, Marseille and Barcelona in summer. In the winter, it travels to South America from Brazil.

Fares are reasonable for both ships, considering their size and relative newness. However, the final price tag will depend on itinerary length and where you live versus where you're hoping to sail from. For example, if you live in Europe, it will likely cost you more to fly to the U.S. go on a Seaside sailing in the Caribbean than if you were to book a Seaview sailing of comparable duration from the Med, even though Seaview is newer.