Nice All-inclusive resorts

My husband and I will be celebrating our 10th anniversary in March and we're thinking about going on a week long vacation (during our kid's spring break - they'll be with grandparents) and we're looking for some options. We've never done an all-inclusive resort and we're interested in trying it out. If you've been to an all-inclusive resort that you highly recommend, could you please tell me where you visited and approximately how much you spent? We don't really have any particular destination in mind. We like to snorkel and play in the ocean but we also like to hike and go on adventures, i.e., Myan Ruins type stuff...;) Thanks in advance for any recommendations.