Your foot aches might come from various reasons, but many times it comes from poor footwear. For years, I struggled around courses, feeling my feet as if they were about to swell up and explode. By changing to proper golfing footwear and by wearing quality golf socks I got from Match Play, though, I was able to overcome the problem with relative ease.
My feet were extremely sore after even half of the course. Now, when I get home, my feet feel far less bruised or irritated. For that reason, I highly recommend getting some proper shoes and socks. The cost is quite high for the real thing, but it will make a meaningful difference to your feet as you go about the golf course.
Sore feet can kill a shot, so invest in proper foot care to feel benefits when playing.