ERRN
Registered
I'll put in a plug for The Scuba Tribe in Playa, small shop, great attitude, fluent English, seasoned dive masters, boutique feel for $70-80 for 2 tank dive, my go to shop for the past 6 trips. Dive Mike gets a lot of great reviews as well. Akumal I would just snorkel personally, can easily reach the fringing reef and swim with turtles without a boat or guide. I have often snorkeled out to where the boat drops with no problems. I would also would veto the bull shark dive, sets a bad precedent and honestly dropping to 70 feet and kneeling on the ground doesn't sound like a dive to me.
Definitely do the cenotes, can do as a dive with the Scuba Tribe or other shop or just catch a collectivo or taxi to cenotes just south of Playa and snorkel. One tip go early, and avoid weekends, gets crowded with Mexican families on their day off. FWIW cenotes can be done as no overhead environment, cavern dive (with OW cert)( don't take chances if not comfortable and competent with buoyancy and overheads), or cave (if certified) google the difference and see what sounds good to you.
Definitely do the cenotes, can do as a dive with the Scuba Tribe or other shop or just catch a collectivo or taxi to cenotes just south of Playa and snorkel. One tip go early, and avoid weekends, gets crowded with Mexican families on their day off. FWIW cenotes can be done as no overhead environment, cavern dive (with OW cert)( don't take chances if not comfortable and competent with buoyancy and overheads), or cave (if certified) google the difference and see what sounds good to you.