haha I go up in the tower all the time i love it. good luck getting up in a bravo tower, but class D shouldn't be too hard. I go up all the time and just kinda hang out. but yeah there are 2 easy ways to do it, just call up the tower and let them know you wanna take a tour and blah blah blah, or sometimes I just give ground a shout on the radio and ask them.