The Busch Garden's Food and Wine Festival is Sat and Sunday and offers a concert with Home Free at 6pm Saturday and Take Back Sunday at 6pm Sunday. Check out the festival food and drink options.
The park can be packed on concert nights, but these groups may not be popular enough to draw a huge crowd, like when Leonard Skynyrd or Boyz to Men performed last year. We always have fun at Busch Gardens during the food and wine festival. Get there at park opening if you like coasters on busy weekends. Many locals arrive later in the day for the food and concerts.
Seaworld has the Gin Blossoms performing at Bayside Stadium 6pm Sat and the Village People at 6pm Sunday. We saw the Village People there a few years ago and they are a still really fun. The food samples we have tried at the Seafood Festival (only open on weekends) with the punch card discounts were very tasty and a good value. Drinks were not a very good value in general.
The park is often quiet in the mornings. The best thing about weekends are the extended hours. Both parks are beautiful after dark and we love staying late on weekends. Afternoons are not terrible on weekends since the shows hold so many people. Arrive 1/2 hour early to ensure seating. Animal encounters are another great way to enjoy a busy afternoon.
Both festivals are are a great addition to the parks. Do a bit of research and take advantage of what they both have to offer.