Holiday soon

So I’m going on holiday with my mum aunt nan and cousins (9 of us going) We are going on the Friday and coming back the next Friday. I’m meant to start my period on the Monday we are away, I’ve only had about 8-9 periods and I’ve never used a tampon, my mum and I talked about it and we decided it would be best to use a tampon, I came off my period just over a week ago. My mum brought me some tampons and told me that I should start practicing with putting it in and stuff, I’ve been reading lots of comments and people say they hurt if you take them out when their dry, I don’t know what to do cos I really want to practice with them for my holiday cos I want to be able to swim but I don’t know if I should just wait until I go on my period whilst on holiday or practise and go through the pain. Please comment what you think♥️