Why not just leave tonight if it seems you are going to need it? Especially being on probation. Keep a low profile, its a part of commuting unfortunately and the commuter clause isnt something you can use all the time. I personally play it safe when commuting first year, do not want any reason to go do a carpet dance as unlikely as that is. It could also be that I get told to go back to work already... Havent figured it it out yet