Its sounds like everyone's flight + AI resorts is about $3,000-$3,500 (I'm assuming this is per couple pricing). So your guests are also paying approximately that much to attend your wedding right? Most of my family and friends are finding it too expensive to attend. I may have less than 10 coming.
My goal is to try to keep it as inexpensive as possible. If you need to arrive the day before and leave the day after that is fine also. How many invitaitons did you send out. I am at the beginning stage and wont lock my date in until Early November.