The family and I are going to Maui next week. I'm going on a couple of dives, my first in the ocean. The dive operation I am diving with will supply mask and fins but I was wondering if I should take my own. It would be easier not to pack this stuff so I don't have to pack around extra luggage. However I've read somewhere it's a good idea to take your own mask to make sure you have one that fits correctly so it doesn't leak.