I've gone solo a few times over the past couple years. In General, I haven't noticed anything in particular either way.
For those that know me, It may surprise them to find out I'm a bit on the shy side.... I don't normally strike up conversations and just enjoy going about my day/trip on my own, so I can't really think of any times that stand out in my mind about great conversations had while waiting in line for something. (I also don't tend to do a lot of Table service, but that's more due to my tendency to just relax and go with the flow rather than avoiding TS meals while solo.) I Have gotten many comments on shirts I tend to wear though.... whether it be a Disney themed shirt, a Random Thundercats shirt i've been known to wear, or any of the other odd Tshirts I've worn while at the parks.
That said, I can think of several great conversations I've had with others when solo. Last year I decided to hit Beirgarten for Dinner. The lady checking me in seemed a bit surprised that I was dining solo, but I had a great conversation with the people at my table. (An older couple and I want to say 2 other couples about my age).
I also had fun joking around at Universal with some people on my raft while riding popeye's Bilge Rafts, to the point that several of us decided to ride it again a couple times.
And of course... the Bar at Tune Inn i've had some nice conversations as well.
Last year at Halloween Horror Nights at Universal, I ended up making friends with and talking to a couple local guys while waiting in the Stay&Scream holding area. We ended up hanging out the rest of the night (as well as with some other friends they met up with).
I don't know if there is anything in general about the lack of random people striking up a conversation with me because i'm a guy... and actually, I tend to write it off more as just being because at 6'6" tall, I tend to tower over a lot of people which can often be more intimidating to them than my male-ness.


