Speaking for myself only, I have no idea what I use. Typically I just try to be grammatically correct. So, I'm thinking I use the term women. But, I might have also used females. Hmmm. I'll try to keep that in mind.
I tend to call males, guys though. I wonder if I've upset any of the men? But, I've also used guys to refer to women. Is that bad? It's just always been weird for me to say gals. It sounds so old fashion. I have said you ladies and got corrected by some youngsters that they were girls. I guess it depends on the age group. I think it's best that I just smile, say hello, and then walk away. But, I have been told that I smile too much. So maybe I'll just turn on my LED flashlight in strobemode for a second or two and that'll suffice.