Golfer………
My post was about a Shevah Brochos, not a Chasunah. It was in a small hall, not a wedding palace. People mostly came straight from work in business clothing. I didn’t see a limo anywhere.
The hosts (not me) did not want crashers of any type. They planned food and drink for those invitees who responded they would attend. It was a private, invitation only event. Certainly a host is entitled to restrict entrance to invitees.
The host could have sent all potential crashers away empty handed, the fact that he gave the employees working the door a stack of $5 bills to distrubute was nice.