There was only one time on my solo trip when I had something said to me about it! I was in line for Toy Story and there was an older couple behind me. I was reading (something that always get me yelled at when I'm with my family, so double bonus that I can read as much as I want when I'm solo!) and they were kind of like "Are you alone....?", like they were concerned. I was 25(ish?) so it's not like I was a 10 year old running around. I said yeah, my friend bailed on the trip so I went anyway, and I could tell they thought it was kind of strange. I just shrugged it off. On trips to Disney a long time ago my family & I learned sometimes it's best to split up! So I was used to being "alone" in the parks for a day anyway. Maybe they were just afraid I was going to get murdered or something, but I just really wanted to do the Christmas trip I'd planned, come hell or high water. Also, that year the parks were super empty when I was there, so it was a really unique experience overall. I did the Jingle Cruise late at night and there were so few people there that we waited until there were 12 or so people on the boat before we went. It was the best time I've ever had on the Jungle/Jingle Cruise! And later I was speedwalking/running with everyone else to ride Splash and Space as many times as possible before the park closed at midnight. When I got the email with my pictures after my trip they were like 7 minutes apart, hahaha. I've never felt really strange eating alone at the restaurants but I didn't do the sit downs, only quick service (I did 50's prime time but I sat at the bar). This year is the first time I've made multiple dining reservations for my solo trip, so I'll find out if there's a big difference in awkwardness.