I am also planning a similar trip this year in July.
4-5 days in Isla Mujeres (3 days swim with WS)
4-5 days in Cancun or Playa Del Carmen (3 days diving Cenotes)
Few days topside travel
This is a big trip for me , travelling from Oz.
I have a few questions.
1. Is it worth travelling to Cuba/Havana for 2 -3 days (UK passport). Would i be able to arrange travel package to Havana from a travel agent in cancun for this trip.
2. What is best place to stay for 3 days diving Cenotes (Cancun or PDC?)
3.For topside attractions is it better being based in Cancun or PDC , e.g for day trip to Chichen Itza
4. Any hotel recommendations for PDC/Cancun or IM?