I love taking folks to Disney for their first trips!
In the parks, here's my calls. I'll opine on outside the parks options later.
MK:
CS - Pecos Bills or Columbia Harbor House
TS - a little tough ... we like Tony's and LTT, esp. for lunch
Epcot:
CS - Tangerine Cafe, Sunshine Seasons
TS - Le Cellier or Marrakesh
AK:
CS - Tusker House, with a very honorable mention to Flame Tree
TS - Rainforest Cafe is the only current option
Studios:
CS - ummmm... maybe Backlot; ABC Commissary is my very least favorite in all the parks.
TS - Brown Derby is the best of the four parks, but it's 2 credits.