Someone please help with my tampon question involving a cruise!?

Omg im freaking out.Kay so im going on a cruise.And i will have my period.So amma bring tampons and pads,i hid them in this little crayon box in a secret compartment im my suitcase,underneath there is this zipper no one can see,parents dont know i got my period and i will not tell them.Im scared that infront of them they be like "what is that" or take it out.Should i put them in my purse in a zipper?!?! someone help im terrified.Scared theyll open my box and see the tampons and my parents will see them.Help someone!