What time does the lobby close? It's different hours than the drive thru.

12 midnight

This answer is catered to specifically the Harrison Avenue location I recently worked at this location (and some friends of mine still do) The lobby closes at 10pm every day and the drive through closes at midnight except for fridays and saturdays which close at 1am instead. Holiday influenced hours are determined by the store manager of the specific location, as some Wendys restaurants are locally run/owned. Note that not all locations have the same operating hours and vary depending on if it is chain run or locally run.

Midnight