It sounds like you're in good hands with your TA. Give them a while to work the issue - I've noticed it takes quite a while for even the TAs to get a response from Karisma when working on special requests or issues. It's hard to be patient, especially when it's something as important as your wedding!
Depending on how many kiddos in your party, another option might be El Dorado Maroma, with the families using the Generations Maroma on the same property.
I'm crossing fingers that all of this works out for you!!!
Hi Murmel Thanks so much for your response! My TA is currently trying to move us to a another Karisma resort, but we still haven't gotten a response from them and I am really worried. Our wedding date is 3/8/14, we are hosting private events from 3/6-3/8, so we would need at least 3 nights. We are in the US. Do you know any Canadian tour operators that we could reach out to? I really REALLY appreciate your help! Thanks! Linds