Florida Snowbird Resorts

Does anyone been to any Florida resorts for the 55+ crowd on or near water, allows pets, has rental units, and all those wonderful activities and facilities such as a fitness center, exercise classes, arts and crafts, dancing, and live entertainment? Thanks for any recommendations!
Florida Snowbird Resorts

At Ft Myers, FL, there is a luxuary RV resort, approximately 3 years old, .5 mi from I-75, 20 min. to beach, 10 min. to river, large concrete pads on large lots with full hook-ups, beautifully landscaped, fishing lake, gated with security. Privately owned, but several rentals available. I know of sites available.