Welcome Strawberry, for SASS it's easier to figure out what's not allowed. From Shooters Handbook & ROI
OUTLAWED • All types of athletic shoes or combat boots no matter the material from which they are constructed.
• Tennis, running, jogging, aerobic or other modern athletic shoes, combat boots.
Also not everyone wore boots, there were bankers, lawyers, gamblers, store keepers, carpenters and everything in between. Most of us have a pair of leather shoes in our closet that will work just fine even for NCOWS. There were shoes with laces, buckles, slip on and ankle high like hush puppys. I dress as a townie with vest, pocket watch, sleve garters and shoes. Don't spend a fortune on clothes trying to get everything you need to start. A pair of jeans and a denim work shirt will get you started till you fgure out what suits you. The main thing is to get out there and start shooting. Hope to see you on the range.
Jefro, Relax-Enjoy