MEve, Sorry to hear that things are going a bit sour. How we managed it was to confirm with first our family who would be going...since they are the most likely to spend the money to attend. We also put together a list prior to sending out invites and did some verbal questioning about interest. We had done some homework and gotten approximate pricing etc so that it would be useful to the conversation. Once we had a rough idea we settled on location. I guess we're lucky in that we're not booking through a resort. Many of the airlines, Westjet included offer group rates where guests and family are just supplied with a booking number. American Airlines you can book online and use this code and Westjet and Air Canada you need to call their special booking reservation 1-800 number to book using your group code (which is helpful because then your guests can do the leg work themselves). Really, you can just pre-call them, let them know that there are 10 guests and they will supply you with this code, with or without actual numbers and you will not be penalized. I have found that many travel agencies are more a hassle then a blessing. Good luck and if you have any more questions, please ask.