October Honeymoon – help us choose!

Hello!

My fiance and I have never been the type for relaxing, all-inclusive vacations. But we'd like to try one out for our honeymoon! Our honeymoon will be in mid-October and we've narrowed it down to 4 places (all in a similar price range with flights included):
– Riu Palace in Jamaica
– Iberostar Grand Bavaro in Punta Cana, DR
– Secrets Royal Beach in Punta Cana, DR
– Iberostar Grand Hotel in Riviera Maya, Mexico

At this point, they are all starting to blend together in my mind. We aren't really party people. We'd mostly like to relax and do some mildly adventurous activities like snorkeling or hiking. If any of you amazing people have stayed at these places or any any recommendations, we would greatly appreciate it!