Buy support socks or compression socks. Ask your Dr to make sure it's OK buy those have helped me in the past
Sit when ever possible like during breaks and keep your feet up at home and get foot massages
I'm a server too.elevate your feet at night with pillows, and soak them in warm to hot water. I also took Tylenol every now an again if the pain was really bad. When I would work doubles I sometimes could even walk from the pins and needles pain on my feet. Try those things other than that we are kind of stuck with it due to the nature of our fast past work environment. Good luck!