Just for everyone's info, it looks like the irs is allowing per diem meals to be taken at 100%. 

​​​​​​​ Notice 2021-63 provides guidance regarding the temporary 100-percent deduction for expenses that are paid or incurred after December 31, 2020, and before January 1, 2023, for food or beverages provided by a restaurant for purposes of § 274(n)(2)(D) of the Internal Revenue Code. In particular, the notice sets forth a special rule that allows a taxpayer to treat the meal portion of a per diem rate or allowance as being attributable to food or beverages provided by a restaurant.