Lost Pines has a multitude of activities including golf, spa, lazy river, horse back riding, archery, etc. Here is the link to peak your interest.
https://www.lostpinesresortandspa.com/things-to-do
Austin has a million things to do. Here are some of our favorites.
Grabbing dinner at Aba on South Congress. Getting drinks on Rainey street. Having brunch at Paperboy. Going kayaking/ paddle boarding or running on the river. Cooling off at Barton Springs. Hiking to Mount Bonnell for the views.