No need to feel bad AT ALL! (Ditto on the cruise line - I've heard the grumbling about adults more there than at the parks, but I just smile and ignore it there as well.) I love meeting the characters - I do meals and everything. And I've had some fantastic character interactions. A few...
* On a solo trip, I did breakfast at 1900 Park Fare and Tigger kept playing peek-a-boo with me around the door he would come through. Tons of attention.
* A family trip (all adults) we did breakfast at Cape May Café and were seated at one of the tables with a booth on one side and chairs on the other. My sister and I were on the booth side, and Goofy decided that we needed to be THISCLOSE to each other. If he looked over and we'd spread out again, he would come over and sit next to me and scootch me over until we were THISCLOSE again. We still laugh about that.
* Another family meal at 'Ohana, Stitch had a blast playing with all of us. He even gave my dad the "Talk to the hand" thing when he tried to drink the coffee from the carafe and it was empty and my dad said "I did it, Stitch. I drank it all."

* The day after the marathon in 2014, I went to MK and happened upon Merida's greeting place. I LOVE Merida, so I got in line. She was AMAZING with everyone (like, the most amazing interaction I've EVER seen - I immediately went to guest services and asked how I could send TPTB a complimentary note about her) - and when she saw my medal she chattered about how she tried to run it... on Angus, but they wouldn't give her a medal because she was on Angus.
* Marathon Weekend 2015, my friend and I were playing in MK and decided to do Goofini and Donald since the line wasn't long. Well, The Great Goofini during our meeting time, hooked my arm under his and proceeded to walk us down, past Donald (between the camera and Donald, which set off a cute interaction with them) and almost to the exit door! I was cracking up, and my friend was snapping pictures of the whole thing. I still don't know what it was about me and that particular day, but it's a treasured memory.
I'm going on a solo 5-night trip in August, and I actually just looked up the character experiences on the website (knowing they can change between now and then, but toil get an idea) and wrote down characters I want to see with their locations and times.

Can't wait!!