I have to wear glasses as I am seriously short-sighted. I also do some scuba diving and I have my own prescription mask (otherwise I wouldn't even be able to find the water!!). I'm really looking forward to our first trip to Discovery Cove but I'm worried that I'll be made to wear one of their plain masks that won't help me see. Will they let me use my own prescription mask & snorkel or do they have prescription masks for you to borrow. I'd hate to miss out on seeing what is going on around me plus I don't feel as safe if I can't see. Thanks for any help.