In July, my daughters and I had lunch at Jaleo, a relatively new restaurant in Disney Springs featuring Spanish cuisine.
We did not make advance dining reservations like we usually do for table service restaurants, because it was a spur of the moment decision to leave Hollywood Studios, and head to Disney Springs for lunch. We were the first table seated, and the restaurant did not get too crowded while we dined, so you probably don't need a reservation if you want to dine at Jaleo for lunch.