I don't remember really wanting to eat while in labor either time. I enjoyed diluted fruit juice, gatorade and tea while in labor and ocassionally munched on a saltine cracker. But like others, I was ravenous after birthing both times. The first time I had my mom prepare a lasagna in the kitchen at the birthing center when the time got near and it was ready for me to chow about 30 min. after birth. Maybe I'll make one ahead of time, freeze it, and take it along this time. The second time, dh and I stopped at the store on the way there (like at 12:30 a.m.) and he got a frozen pizza because I knew I'd be starving after she was born.
I've never had frozen grapes. I might have to try that. And juice popsicles sound good too. I might take some Special K water along since it has protein. That would probably help if my labor is drawn out.