Our Florida community (350 homes) is rooted in friendship, and we interact with almost all of them, either through the activities, coffees and parties or small groups of "special" friends. Amazingly, few if any cliques. After living there (snowbirds) for 24 years, even know the names of the dogs.
Our campground home for the other 6 months of our first 14 years was an extremely close knit neighborhood with 8 families who did the 6/6. We did everything together from building rooms, to shopping to dining and card games 5 days a week.
Now, in a regular home in a CCRC, (65 regular homes) we are less active socially (by choice)... but do know and like our neighbors. We have HOA seasonal parties, and go to the central core of the rest of the development. Apartments, Assisted Living, Rehab, Nursing Home, and Alzheimer's unit... Meeting rooms, library and social rooms for cards and family visits. DW plays cards there, several days a week, and we go for lectures, parties sing alongs etc...
We are very happy with the arrangement. We are among the younger people in the community. The decision to move here when we did (10 years ago) meant that we were able to integrate with the entire community. I now have friends in their late eighties and early 90's who are wonderfully smart, social and active. This may sound strange to people in their 40's, 50's, and 60's, but a comfortable, safe, environment with many good friends makes for a low stress, happy life. So far, we still have all three homes and move between them, but transitioning to full time in the CCRC will be easy.