I snorkel frequently, and have always used the resort equipment. Only one time have I gotten a "bad" mask, and I asked for a different one which worked MUCH better. I don't want/can't take up the space in my bags with snorkeling stuff.
If you DO want to bring your own stuff, definitely don't bother with fins. Just bring your mask/snorkel.
Ragnar Relay 2014 - MIAMI to KEY WEST!
Marine Corp Marathon: 10/12 4:09
NYC Marathon 11/6/11 - 4:21
Chicago Marathon 10/10/10 - 4:19
Marine Corp Marathon '09 - 4:26 / '08 - 4:28[/FONT]