Hard seltzers

I’m currently in a drug program because I tested positive for weed on a random drug test for my job and while in the program they also expressed that I can’t drink as well,I’m an occasional drinker usually when it’s someone’s birthday or it’s a special event and I wanted to know how long alcohol really stays in your system. They only do pee tests and I was thinking of having a white claw this weekend while I hop on some games. My question is do hard seltzers stay in your system for a couple days as well ?? The class is only 3 days a week and they don’t test you everytime they just have the option too if they wanted. Would I be good to drink a white claw and it be out of my system by Tuesday the day after Labor Day ?