Lunchtime is the main meal of the day but most of Spanish people stil eat a lot at dinner. I can say that Spanish always eat a lot and it's a big secret for me how Spanish women manage to stay in a slim shape
For we the most irritating thing was that most of restaurants close between lunchtime and dinner time (from 4 till 7 p.m.). So, if you're starving at around 5p.m., it's really hard to find any place to eat.