Hi Don #1 and welcome!!!!
I travelled solo last Feb. which was my first time solo (but not the last

). I had just one so-so experience at the Concourse Steakhouse for lunch(2pm) and it was with the seating arrangements. I only waited for about five minutes but when the hostess handed the menu off to my server to seat me (he eye rolled her--I acted like I did not see--nope, wasn't gonna ruin my trip) he brought me to a table in the center of the restaurant. Before he even set the menu on the table I asked if I could have one of the many empty tables off to the side. He said those were reserved. I felt that he should have at least checked with the hostess up front who assigns the seating but he did not. He gave me adequate service, not the best but not the worst. By the way, no one ever sat at any of the other tables the entire time I dined. I just felt like I was "on show", as there were a couple of large conference groups there as well.
My other experiences were really good:
Kona Cafe (Poly): dinner (8pm)
Whispering Canyon (Wilderness Lodge): lunch (2pm)
Grand Floridian Cafe (GF): breakfast (9am)
Flying Fish (Boardwalk): dinner (5pm)
The rest of my meals were counter service. The above meals were lovely with no problems at all. I people watched, reviewed my day, etc. I learned from my first experience at CS to request a table exactly where I wanted to sit and they were very accomodating. Keep in mind that I was in WDW during an off-peak time of year and my meals were somewhat off-time as well. I did not have any advance reservations. There were other solo diners at all of the restaurants too. I am somewhat of a shy person but am working up to some of the other venues which I adore but did not feel as if I could do them on my own.
From what I have previously read on the DIS, there are several restaurants that have "show kitchen" bars that are popular with solo diners. You can sit at the "bar" facing the kitchen and watch. Evidently the chefs are very interactive with you also.
There is a forum here called "Disney for Adults and Solo". You may want to check them out. They are a very fun and helpful group.
Have a wonderful trip and if we can dine solo outside the world, why not at our favorite world.
Let us know how it goes. Have fun.