|It probably would work but 50 feet is getting a bit long for reliable reception. You would need direct line of sight to ensure good reception. It is one of those things you will never know the definitive answer to until you try it.|
However, the thing you have to consider is will the free hot spot allow you to make what would be a permanent connection to their network. Free hot spots are usually for people to log in, download their Email, do a bit of browsing and log of again.