Hunting season 2026: 8 guys for 10 days. Service once or twice?

Setting up for elk season next year. We have eight hunters coming for ten days, no other facilities on site. The ground is rough pasture, but the service truck can get within twenty feet of where I'll put the units. I'm renting two standard portable toilets and one ADA-compliant unit to cover the group. We'll have a cook tent and beer in the evenings. Trying to decide on service frequency, once at the mid-point or twice, maybe day four and day eight. Worried about capacity and odor with daily use. What's worked for your remote camps?