The excursion we did was a blast. Five zip line passes, and two rapelling legs - part of which was inside a cave. Very fun, very unique...and I'd do it again!
We visited Kohunlich ruins. Long bus ride, but well worth the time. We learned a lot, and the ruins were incredible. Would do this again in a minute.
Note - some of our group did Kohunlich and the other location (Disbache?). They enjoyed both, but were a little rushed at the second stop because of the travel time required. Beware if you do this tour....the two-stop bus was late getting into port, but since it was a Royal-sponsored tour, we waited.
We did the 3 Reef Snorkel. Fabulous.
Shopping was, and always is good in Costa Maya. If you arrive at a terminal other than (I think) Porta Maya, go to Porta Maya. Shopping is better, there's a Ron Jon's location...and the Los Cinco Soles silver shop is better. We love Los Cinco Soles. Prices are good...the help doesn't give you any B.S. about what they are selling, and they KNOW their product.