Welcome to FlyerTalk hikecdnrckys. The key is to book the maximum number of days in advance allowable. This is especially important in Executive class.

There are very few seats for rewards in exec, my sister who was E used to call 330 days in advance and had a difficult time.

AC send a small aircraft to Antigua in February, and there is no small number of aeroplan members who wish to spend a week there in February!