Advice?

I'm going on vacation tomorrow and it's to a water park resort type thing. I'm on my period and I don't use tampons so I can't do any swimming. My stepmom knows I'm on it and also knows that I don't use tampons. I really want to be able to go and have fun with everyone but I know I can't. I don't know what to do since the whole resort is based around the water parks. If anyone has any advice to give, I'd be more than happy to listen 😊