Lui,

Mokey said "The life you have ahead of you - travel, family, parties, possibly having children, great career, going out to bars with friends, dancing, going to concerts, listening to loud music, etc....all of these things will be so difficult or impossible without a healthy,fully recovered brain. "

Actually, you are likely already at a prolonged condition where you need to be cautious about "going out to bars with friends, dancing, going to concerts, listening to loud music," because your never will achieve a "healthy, fully recovered brain." When you participate in these activities, you will likely find that you brain fatigues more quickly than your friends. Each time your brain suffers another concussion, your brain is left with a greater tendency to fatigue. Very few regain an ability to fully tolerate these intense levels of sensory stress.

As post concussion said, take it a bit easier so you can enjoy your entire time here. Going home early and feeling miserable at home is double the disappointment. Enjoy your visit. We (the USA) has more to offer than high school sports teams.

My best to you.