Sounds like a good use for LED stringer. Maybe from top of camper to about waist level stake, made to be decorative and festive looking.
If they duck under to pass, greet them, "We!come, thanks for coming to my party! Beer goes on the table, have a seat." Reach out and take their beer and head for the table.
Pros, they object, take their beer and leave, being sure to avoid your site on their way back.
Cons, you have as many cold ones as you can stand while chatting up your new "friends" then send them on their way a little lighter :D
...we've told people to go ahead and go through this time, but please go around next time, or point out the trail/path. Done politely, we've never had a poor reaction, usually a return smile and wave.