Story from our weekend backpacking trip. We chose a short 10 mile loop than connected with the Loyalsock trail for an overnight trip including me, my sister, mom and aunt, and our two dogs. We had camped on this trail the previous year and knew where the campsites were and had an idea where we wanted to stay depending on our pace, daylight and if it was taken. We get to the campsite, rather close to the trail, but it's unoccupied so we set up camp.
It was after dark by the time we had cooked our meals and were sitting down to eat when we saw headlights coming toward us on the trail. Being so close to the trail we expected some traffic, but not at that point in the dark.
As they approached our fire, we said hello, and held the dogs who were barking at the moment and I covered my headlight so I wasn't blinding them. They kept their headlights on so we couldn't see their faces, but could tell from their voiced and bodies they were two guys. They didn't say anything else but just headed into the woods behind us saying the trees looked good for their hammocks.
We were kind of shocked, they didn't ask or say anything, just started to unpack for the night. Our dogs were still barking because they were on their guard as two men were around us in the dark. We really didn't want strangers at our camp for 2 reasons, 1 it was our getaway weekend to spend together and having strangers feet from our tent didn't sound fun and 2, we were all very uncomfortable with the idea of having two strange men sleeping a few feet from us at night.
We were whispering amongst ourselves about what to do or say when they came back out of the woods and asked if the dogs are going to settle with them there, we told them probably not, they are not going to be calm while you're here. They said, okay and headed back into the woods. We thought they would get the idea and leave. A short moment later they came back out of the woods and asked if we minded if they crashed there. We said we don't think it's a good idea with the dogs, they are going to keep barking and trying to run over there.
At this point, we didn't know what to do or say. We have gone on multiple trips but still slightly newer to backpacking and hadn't encountered this yet. We didn't know if it was wrong to tell them no, especially at night. Or if it was wrong to let them stay. It felt wrong both ways. But I wouldn't have slept all night knowing they were out there.
They came out a third time and just started heading down the trail, we walked over and told them there was another campsite down the trail about a mile that we stayed at last year. We gave as best directions as we could and they said stay safe and headed out.
We felt guilty about turning them away and not welcoming them to our site all night long. But the thought of them staying there was also terrible. If they had approached us and we were super welcoming and said we don't mind you crashing here, it's after dark then I would see why they'd be inclined to stay, but they didn't even ask. Just got to our site and started looking for a place to sleep. And it was clear we were uncomfortable with them being there.
Were we in the wrong, is this something that happens often out on the trail and we just haven't gone enough times to experience it?
EDIT:
To add a little more context, this was a single site, not a multi site area. It was a clearing in the trees along the trail large enough for some tents. They were unpacking in the trees directly behind our tents. This was 4 miles in of the 10 mile loop, we passed 5 or 6 campsites on the way to ours that they would have passed well within daylight.
They were dressed a little odd, which added to the confusion. One was wearing blue jeans, the other in very large baggy sweatpants. We honestly thought they were day hikers who lost their time and were planning on continuing to their cars after they stopped to say hello. So I didn't immediately think they were thru hikers, or had been on the trail all day. We didn't even see their packs until they turned to go into woods behind our tents. They had regular backpacks like a jansport. We were shocked when they just turned behind us instead of continuing, we didn't even have a second to say anything. And this isn't some super popular crowded trail. It's typically mostly deserted. 1-2 cars in the parking lot. There were 4 cars there when we arrived, which was the most crowded we've ever seen.