The Assembly doesn't require members to submit hotel receipts and Scarborough told the Post he would not look for them. (politico.com)
You can show airline tickets, boarding passes, entry stamps on your passport, or even hotel receipts as proof of these meetings (so keep all this stuff if you're not there yet, but think you (modernlovelongdistance.com)
Points and elite night credit may be earned for stays completed within 30 days prior to the Member's enrollment, if such credit is requested in writing, along with a copy of the paid hotel receipt, within 60 days of the stay. (renaissance-hotels.marriott.com)