I am a first time cruiser and have just booked a 3 day cruise thru Small World Travel. I received my confirmation letter in the mail and now have a reservation #. Can I log onto the disneycruise.com web site and make additional payments there or do all payments have to go thru my travel agent? Also, I booked a stateroom for my daughter and grandchildren. Will they have a different reservation number from my stateroom?