We will be in Raleigh at the very end of July for two nights staying at the Marriott City Center. Any suggestions for restaurants within walking distance? Any type of cuisine is OK. If there is something unique to Raleigh/NC that would be great. Mid-priced (most entrees up to the $20s) or even very casual is OK. Also please let me know if you think reservations are necessary for the place on a Friday or Sat. night. Thanks!