My daughter is going to her first sleepover but still wets the bed HELP!!

My daughter is going to her first sleepover but still wets the bed. She used to use drynights but they wont hold enough and always leaked so she is in pampers size six.

She has her first sleepover coming up and i really dont want her to miss out. Is it best to send her with drynights and risk a leak? or pamper? and do you tell the other mum? please help!!!??