Not sure how big your party is, but if it's 3 or more, try splitting it up. Instead of looking for a FP for 4 people, look for 2 - you may be able to get 2 2 person FP's with slightly different times but with lots of overlap. For example, one FP for 2 people from 11-12, and one for 2 people from 11:10 -12:10. That worked out well for my party of 5.