13 of my immediate and extended family traveled to Costa Rica for the first time to a third world Country. WOW. From the accommodations to the service, to the food and views. This cannot be beat. You are secluded on a mountain top retreat and not surrounded by other tourist with incredible views. With a beach only a 15 minute walk down, 25 minute walk up! :)
Incredible coordination for activities which included spa days at the house, day long sailboat cruise with snorkeling and set set views, zip lining, horse back riding and scuba diving no more than an hour away. For a large gathering, skip the resort and enjoy the people and culture which is Costa Rica.
We went with the all inclusive package. By the time we returned to the states, I had forgotten how to open a beer. Everything was exceptional.