Alisa> You definately can just have a drink at margaritiville they used to do re-fillable big cups for alcoholic drinks on a special too!
I think they have some activities some days you will have to check once there.
Here is Rhodes hall websitehttp://www.rhodesresort.com/
I see they are now charging 15 dollars for a day pass pp that includes transport that is a tad high in my estimation but think they are also offering day pass plus special of the day lunch and one drink for 15 dollars that does not include transport .I think it is about 7 miles away from the beach 5 minute taxi ride.It is a lovely relaxing place private cove and the animals depends what price you want to pay.