Suggest Measures To Take For Swimming During Periods

I am going to go to a picnic to a water park and it cant be cancelled bcoz i've already paid the fees which was quite high we are goin only for 1 day(15 hrs)and hardly spend 2-3 hrs in water pool.I am having mensuration and i wear pad(Whisper ultra)which is the best one and the costiest also it have wings and there is no chance of slipping.So can i wear it and go in the pool.Also there will be no pressure in pool bcoz its a water pool.Can i also go in rides.Please do not give me advice of wearing a tampon i'll simply reject or report it as abuse i am very small for tampon and also not allowed.I am 15.Can the blood spill.We will be provided swimming suits in addition i can wear a black nylon tights used for swimming if adviced.Plz helppppp meeeeeee i relly need help.Plz tell me ur experience and if u went in water pool wid pad which one is the best pad for it?Plzzzz hellllpppppppp i am scared.

i wanted to inform that the tights is dark black in colour and its very tight just 1-2 cms up from the knee and additionally i will also be given a swimming suit from school and i'll choose a dark one.So the tights will be tight and would not allow the water to go in its of nylon.So now what to do?