We plan on registering for a few items (he already owns his home so he pretty much has everything) so we can have a registry for the shower.  But instead of gifts for the wedding, we'd prefer money (even though people think it's tacky to ask for money).  So I've been looking at getting a honeymoon registry.  Has anyone used one before and can give pros/cons on using it rather than getting cash?  Do you have a site you used/know someone has used and liked?