I've done TS, both character and non character, but, I've had mixed experiences. Ohana breakfast was awful as I was ignored by the characters, they probably thought I was waiting for other people, but, it was still annoying. However, I did a Star Wars buffet and that was amazing, the CMs, characters and the guests on the table next to me were amazing. I have also done Hoop Dee Doo and the Luau, but, there they automatically bring enough food for two, even if there is only a solo guest, which is great with the stuff you really love, no sharing.
Just be aware of two things, other guests, especially young families will give you funny looks, just ignore them they are just jealous
The other is that you may get a server who only sees a solo guest as a smaller gratuity and you don't get the same attention as larger parties, it is rare, but, it does happen, just make sure you are seen when you need something.
Bring something to read or occupy yourself when you are waiting for your food and just enjoy that you are having your meal in peace, which your choice and at your leisure.
I personally hope and believe that Disney will realise that there will be more solo visitors, especially older females and will train all CMs at things such as TS and character M&Gs to be equally as attentive as families and couples. I see more solo guests now than I did 10 years ago and more CMs who make us feel equally as magical.