The family and I have got 17 days booked off site for the beginning of May (1st ever trip). The youngest of my 2 girls will have turned 3 by a couple of months. She's not exactly big for her age and friends have been suggesting there is no need to buy her tickets, just say she is under 3. How strict are they when it comes to under 3's?? I realize this will mean not being very honest, but $400+ is an awful lot of prezzies and momentos for the kids.