The kitchens change over and meal prep is different between lunch and dinner, so there's a pretty good chance they won't be able to accommodate your request. However, as others mentioned the bread service is available at both lunch and dinner. Also, Sanaa is not as adventurous as some might think. It's very americanized and if you tell your waiter what you're trying to stay away from/what you like, I've found them to be great at helping non adventurous eaters in our group find something they're really happy with. The butter chicken is fantastic!