Loose itinerary:

 

7/18 Day 1 = arrive, Ek Balam/Dzitnup then Ik Kil, stay at Hacienda Chichen

7/19 Day 2 = Chichen Itza then Ek Balam/Dzitnup = stay = Turtle house

7/20 Day 3 = Cenotes Dos Ojos and Grand Cenote = stay = Turtle house

7/21 Day 4 = Coba and Cenote Car Wash = stay = Turtle house

7/22 Day 5 = Cenote Jardin del Eden and Azul Carr = stay = Tulum house

7/23 Day 6 = Enjoy beach = Tulum house

7/24 Day 7 = Tulum ruins = Tulum house

7/25 Day 8 = Enjoy beach = Tulum house

7/26 Day 9 =  Akumal Bay/turtles = Tulum house

7/27 Day 10 = Enjoy beach and Casa cenote (walking distance) = Tulum house

7/28 Day 11 = Xel-Ha (?)= Tulum house

7/29 Day 12 = Cenote Verde Lucero and La Noria then travel to Holbox Island, stay at  Villas HM Parasio Del Mar

7/30 Day 13 = explore Holbox beaches on golf carts and bioilluminescence?= Villas

7/31 Day 14 = Whale Shark snorkeling private tour 8 hours = Villas

8/1  Day 15 = Explore Holbox beaches = Villas

8/2  Day 16 = travel home