If a traveler has a family member or knows a friend at the TDY location, allow the traveler to make arrangements to stay with them and reimburse them for 50% of the allowable per deim rate for hotel stays in that area. I frequently travel to Washington and stay overnight. The per diem rate for a hotel stay was $211 in June. If I stayed with my sister, who lives in Alexandria, I could give her $105 for each night's stay. The Government would be saving 50% and my sister would be reimbursed for her troubles. It's a win-win scenario.
Idea No. 7377