Don't worry about what side your cabin is on, that is why there are open decks! We enjoyed both sides of deck 4, deck 10, deck 9, and our veranda, plus Palo! It really was an experience that I will never forget. There are many activities during the sea days. This can range from the various tastings, napkin folding, art, lectures, other crafting, bingo, lounging by the pool...., movies, etc. You could do nothing or everything! Also, on most nights, they had a few hours that the kids clubs were open for adults. I felt you had to work to be bored.
We were lucky enough to be a part of a great group on this past cruise and did a private excursion in Cartagena, we did an all over city tour with a very knowledgable tour guide. In both Cabo and Puerto Vallarta, we did not book with
DCL, rather walked off the ship and negotiated with the locals on a tour and a price. We were happy with both. Our table mates did the camel ride in Cabo and absolutely loved it! They did a city tour in Puerto Vallarta and did not enjoy that as much, through DCL. I enjoyed getting to see Cabo and Puerto Vallarta, but wish DCL would stop in Costa Rica, or, for me at least, more interesting places to see on the way south to the canal.
In Cozumel, again getting tired of this port, we did the Tulum ruins this time out, it was short due to our very short time in port, but worth it. Glad I have seen these ruins once. The ferry ride, well I had taken 1 bonine that morning and popped another before the afternoon return, lol. I know many people did the caves and had a good time doing that. Some went for the beach and enjoyed that. Depends on your preferences.
The ruins on Cozumel were not worth it with the DCL tour the time we did it. Go independently and avoid the rest of the tourist trap tour that you get taken on, this is not Tulum, I do not remember the name of the ruins. The other two times, we just walked around Cozumel and shopped, and then enjoyed margaritas at Pancho's. A friend really enjoyed the atv ride, but I don't know if it is offered on DCL.
There were also people who never got off the ship. Except for Cartagena, I don't blame them, unless you have never been to Mexico. If you have not, get off, enjoy! I think growing up in Texas and visiting frequently, it does not feel special any longer, and there are many other places DCL could stop, but does not.
Overall, the cruise was great. I was ready to turn around and go again! Such a fun time with some amazing people!