Personally, I think I wouldn't like being away from home during the Easter weekend because of church obligation and every year I've got to attend masses daily from Holy Thursday right up to Easter Sunday, but that is just me. So it really depends on how your guests are.
I think its fine but just keep in mind that there is a good chance you will have guests say no because of the date. For some people, especially with kids, easter is the best time to go on a small holiday and being such a busy time of year they book a year in advance so for those people they wouldnt come to your wedding even if they wanted to only because they have already spent money on their holiday IYKWIM. Otherwise those people that really care about you and want to be part of your day wont care if they dont do their 'normal' traditional easter thing.
hey, my sil had her wedding on north straddie, easter weekend just gone alot of people turned up for it too. I think as long as the guests have plenty of warning, they could find cheap enough flights, accommodation, etc.