With any dining questions, you are likely to get lots of different opinions.
Tony's is just okay, IMO. The decor is cute.
I like 1900PF. The food can be slightly variable. I like it better for dinner than breakfast. The step sisters are a hoot - some of the best characters on property, IMO. The biggest downside is the price and the noise level can sometimes be loud. After or before your meal, taking time at GF can be a nice break from the hub bub of WDW. The live music is very nice, the grounds are also pretty.
I think most of the places at GF are quite good! Citricos, Narcoosee's are excellent. I alos like the QS. The cafe is okay. I've never tried V&A, but it doesn't appeal to me at all. For that matter, most of hte places in the MK deluxes are very good. Another place you can probably get last minute is The Wave.
In MK, one place that's often available is the sandwich place.