I understand why the guy wants to propose at the beginning of the trip...then they have all week to celebrate their engagement. But since you guys are getting married so early in the trip, I think it would be respectful of him to wait until after the wedding. Getting engaged the night before your wedding, you know she will still be glowing & showing it off (not in a bad way...just excited!) the next day...your wedding day...and that is not cool. I think you should just ask him to wait until after your wedding. I don't think there is anything wrong with someone getting engaged during your weddingmoon - I just think that it should be done at the right time. (ie, not the day before or day of the wedding!!)