aulani aunty's beach house proof of age

[ab2022]

hi, i'm taking a trip with my two kids age 9 and 4 almost 5...he turns 5 the month after we're there, and i can't change our dates...we were lucky to get a res for that week we did! how strict are they on the age limits? i know the pre registration form makes you list a birthdate...will they ask for a birth cert as well? he's in kindergarten already and would be with his sister, i'm just trying to do it to book a spa appt as i'm traveling with them alone so it's not like i can have husband or family watch them. would love to be able to drop them off once for a few hours for that. any recommendations/thoughts on this?