Shouldn't matter at all, 2 + 3 = 5, 3 + 2 = 5 . As suggested (by you ) the only time it would really matter would be with the pre-paid locations.When I made ADRs for our upcoming trip, it was for 2 adults and 3 kids ages 2,4, & 5. Now our party has changed to 3 adults and 2 kids. Do I need to call and change this on our ADRs or will it matter? None of our ADRs required a credit card in advance.