Speaking from experience, I say do your wedding they way you want. Have the ceremony wherever you want. We decided to have our wedding outside so my mom and sister didn't have to step inside a church. Then at the last minute the told me they were not coming. They said by coming to the wedding they would be approving of me marrying a "worldly" person. Of course it rained and we had to scramble to move everything to a church. A couple of friends of mine couldn't find the new location and missed the ceremony.
Make your wedding everything you want it to be. Don't let your family dictate what yourwedding will be like.