Los Sanchez on Garden Grove Blvd - it's a counter service Mexican restaurant that's always hopping. Go south on
Disneyland Drive (aka West Street) till it dead ends at GG Blvd, then turn right and make an immediate left into Los Sanchez. It's about 3 miles - here's a
Google Map.
(Some of you might remember Los Sanchez from it's "hole-in-the-wall" days when it was on Harbor Blvd about where the Sheraton is now. With the redevelopment of that area the GG city fathers gave them the boot and now they've built a brand new building on GG Blvd. It's still counter service and still as good as it always was.)