Wow, we had the opposite experience each time we have eaten at Tusker's for breakfast (3-4xs) We were seated right away. Never had an issue with the food dishes being empty at the buffet. Good service, don't really remember any negatives at all. The food wasn't our favourite but it wasn't bad. Our two kids like the character experiences at Tusker's because you get to get up and interact with the characters and not just for pictures. The last two times we were there, they passed out musical instruments and the kids formed a conga line playing music together with the chracters and then dancing in the middle. They did a similar line at the Poly with Stitch and Lilo.
And what you say is why we did it. All the posts I read said how awesome it a was, very few complaints (which were subjective). Everything seemed to be really rushed by everyone including the characters. The kitchen also seemed to be focused on only preparing items for lunch and not putting anything else out for breakfast. Our waiter was difficult to find and it took forever to pay the bill.
We have done Ohana's breakfast and I understand what they do there which is awesome (we loved Ohana's) however none of that magic was present at Tusker House last Friday am. We have also done CRT, Chef Mickey's, Royal Table at Epcot, Crystal Palace, and others over the last 5 years, so it is not like we are newbies at this.
I just wanted to point out a recent experience, and to be wary. Also note it was an EMH day.