ecojohn makes an incinerating toilet for "heavy use"
SR12 - 8-10 people full time; residential and smaller commercial applications - oil rigs, construction sites, camps, military, refugee camps, disaster relief, house boats etc
personally id be more concerned about the traffic in & outta the coach, and the size of the holding tank if you're gonna have that much uses.
Don't the Texans put up portable johnny-blues in the parking lot ?
my solution would be to limit who uses the head & id instruct EVERYONE to use the port-a-cans / johnny-blues in the parking lot unless it was a complete emergency.....i do that even with my coach (50 or 60 gal black tank) when were at the race tracks (dry camping).
'04 Haulmark (M42386) 42', 2 slide, 10kw - Pictures
'04 F350 CrewCab Longbed 4x4, 50g aux tank & gear vendors dbl over