Nice purchase. When do you plan to visit the resort?
There are surfers (locals) who take advantage of the waves when it's stormy. Your message asked about swimming for beginners. Are the surfers also the beginner swimmers? When it's not windy or stormy the hardest part is entering and getting out of the water at the beach as there is a curl of undertow. It can knock you to your knees. You have to time the wave when getting in and out. Once you're in you can find the sandbar if you want shallower water.
There is a nearby county beach (Phil Foster Park) that is connected to the intercoastal waterway. It is generally easy swimming. There's many classes for snorkeling and diving that go off that beach. It's under the Blue Heron bridge. It's busy with locals on weekends and school holidays but pretty quiet during the week. When the wind is high for days at OP (like it can be during the Platinum season) we will take our chairs over there for a quiet day at the beach.
Our fav restaurant is Guakamoles. It's just a small hole of a place but within walking distance and high quality food. It's always a treat to visit Sailfish Marina. They can be very busy if you wait until 6 for dinner. Lunch and midday is better. We also like their tiki area for a light dinner.
One thing you might want to do is spend a day on Peanut Island. You can go to the museum and then the beach. Maybe even see manatees if you roam the island. There is a man made reef for snorkeling. Waves are pretty calm there. There are bathrooms for changing. Pack a picnic, there's no food service. You get there by water taxi from Sailfish Marina.
Maybe you can call the concierge before you get to the resort to go over things that would interest you. Then you're not spending precious OP time making your plans.
