I think that Tournaments are a great place to rapidly learn new skills, as well as keeping the old brain moving with all the diversity of players. I find that stretching too far outside of my rating range is discouraging, but stretching a wee bit is exhilerating & encouraging. So, if you're wondering whether or not you out to try a tournament, go ahead! Dive in & splash about. You'll be swimming before you know it.
Cheers!