I have stayed at all of the hotels in TV before my rentals have started. All are nice; The Waterfront Inn was the most expensive of the bunch. Thy Waterfront Inn at LSL is golf cart accessible, Marriott Towne Suites at SS, and Comfort Suites and Holiday Inn Express which are a couple of blocks from SS are also golf cart accessible. I don't think the Hampton Inn on 466 is golf cart accessible, but someone correct me on that if I am wrong.
You can rent golf carts by the week or the day if you check classified ad section of
The Villages Daily Sun. As far as being pet friendly, I don't know which. if any, of these hotels are pet friendly, but if you check the hotel's web site, that information is usually available there.