Welcome Sign, dangerous?

I'd probably put the sign indoors, not because of any potential issue with homeless people, just for privacy's sake.

With a sign or without a sign. some people may walk by. stop for a bit. some may watch for a bit longer. its part of what happens at an outdoor event. if its a public hall. usually there are employees that would deter people from going into the ceremony.

I personally would put the welcome sign just inside. not outside. if that is how it is.

I wouldn't worry to much, but regardless of whether the sign is inside or outside - perhaps take a pic of the outside and put it on your wedding website if you have one?

In my hometown there's a gentleman that shows up at every wedding and funeral! No idea how he knows they happen because not all of them are in the local paper. But, I don't think people will wander in. If you have the name of the building and the address on the invitations, your guests will be able to find it, so you don't need a sign. I have also not been to a wedding where there is a welcome sign and have always found the place!

Hmmm. If there is any concern... just put your welcome sign just inside the doors, or right at the doors. I think it would be best if your trying to be more discreet about your event happening, keep the sign indoors.

I wouldn't be worried about homeless people wandering into your wedding... more so on nicely dressed people who can slip in and out without much suspicion, who steal gifts/cards. I've gone to school for event planning, and my wedding planning instructor told us it is very common for "crashers" to just wander in, swipe stuff off the gift table (mainly cards, hoping for cash), and leave. They usually come prepared, dressed up to match the wedding guests.

I suggest keeping your gifts/cards table further back into the hall, and maybe after an hour into the reception, have a bridal party member (perhaps groomsman/best man) take them and put them in a room that can be locked.