That's really helpful,
I hope this is right but I may follow up with an email as suggested. I am...gulp...going to take my sister's family over next summer (overall 4 adults 2 kids), I really want my niece and nephew to experience DLP while they are still at that age! It's a first for me...usually I go it solo or it's just hubby and I when I can twist his arm. It's gonna be a sizable expense, although worth it to get the kids a holiday (my sister is not in a financial position to do it), so I'm keen to book early and spread costs.
Thanks for your help. I'll post if I find out for sure.