My last stay (arrival about 9pm on a Sat night/departure at 5am) had the same check-in line issue. I was in elite line but the normal line was moving faster & they weren't calling people from the elite line. I finally moved to the regular line to get checked in while people behind me in the elite line were still waiting after I had gotten my key. No upgrade, until I gently pushed mentioning it was a single night stay & then was upgraded to junior suite. Junior suite was fine, other than it was facing Century Blvd & the traffic noise made for fitful sleep. I prefer the Renaissance.
Cheers.