We were on the "waiting list" for Houx and MB sites, but were offered Beausejour, and rather than risk being disappointed we said "yes" to the Beausejour site.
The ACO kept us on a waiting list for the otheres tho' and when I queried with them the other day where my tickets were, they told me they were keeping me on the waiting list just in case any turned up. I thanksed them and told them to send the tickets.
If you have had a similar history, I suggest faxing. They dont reply, but they get the message OK. We have been lucky getting thru on the phone tho'