I finally made it to Cozumel on a 5 day trip to check out the island and do 6 dives (2x day). A friend set us up at Scuba Club on a dive package which included 3 meals a day and 3 days of diving. Shore dives are free (excluding scuba rental fees) and any alcohol, or meals not included in the daily menu, is extra. I didn't wear a wetsuit, just board shorts and a rash guard. Visibility was easily 30m+ with a very small current in the mornings. (9am-12pm in-water time)
I wanted to take advantage of some storms in the area and also kiteboard there for a couple days, but the winds never really arrived, so a couple days were checking out different parts of the island.
I also wanted to take the Mavic 2 drone with me to get some epic shots from the boat and around the island, but I kept the packing to a minimum and brought a GoPro and no gear. I rented everything.