Slot machines near your gate are dangerous. They also play and pay pretty well. This is Vegas baby and gambling is EVERYWHERE. The gate is your typical airline gate, with seating, tables out in the common area, with plug in stations for your phone, sadly the table I chose didn't work for plugging in, but I had my own battery bank.
All United gates have their similar set ups with the numbered positions, with luck you'll be either 1, 2 or 3, after that pray to your gods that you get over head space. ;)