vabaseballmom,
The Fort Myers area is our favorite vacation destination. We are usually most interested in watching baseball (college teams at spring training, MLB teams at spring training, or the Fort Myers Miracle), and spending time at the beach.
I'm sure you won't have a lot of time since you're only going for a weekend and you'll be busy with your son's tourney. But if you've never been to Sanibel Island and do find yourself with a free afternoon or early evening, I would recommend driving west to Sanibel and walking barefoot in the beautiful white sand, with a swim or float in the Gulf if you have time. We have taken our summer vacation on Sanibel the past 3 summers. We also like to drive further west one evening each vacation, to watch the beautiful sunset from the beach at the Mucky Duck restaurant on Captiva.
These are probably better suggestions for a return visit though, since there is a bit of driving involved and you'll be busy.
Best wishes to your son at the PG Underclass. I'm sure it will be a great experience for him!
Julie