Reddit reviews Green Potette Plus Port-a-potty Training Potty Travel Toilet Seat - 2 in 1 Bundle with Potette Plus Liners - 30 Liners by Kalencom

Our Toddler camping packlist:
Foam pad
sleeping bag
favorite blankets
pillows
several plastic bags (for collected items that "must" be saved)
several books to read
lots of convenient snacks
depending on age: pack-n-play
all the warm clothes
big tent with two rooms inside
battery-operated lanterns (one on all night at extra low)
chamber pot/emergency potty station (the kids will want to go to the bathroom at night but not want to get out of the tent) https://www.amazon.com/Potette-potty-Training-Travel-Toilet/dp/B00NFZ35V8/ref=sr_1_6?crid=DLZ2GLPR4TQC&keywords=potette+plus+liner+refills&qid=1558453821&s=gateway&sprefix=potette%2Caps%2C179&sr=8-6
plastic plate/bowl/cup for each kid (color coded)
the handwashing station is an excellent call, I'd include a plastic tub with it
Almost forgot! Glowy stuff (glow sticks, leds, something) to give to the kids at night. They'll be excited, and you'll have a brightly-lit child that is easy to find at night

https://www.amazon.com/gp/aw/d/B00NFZ35V8/ref=mp_s_a_1_1?ie=UTF8&qid=1511995031&sr=8-1-spons&pi=AC_SX236_SY340_FMwebp_QL65&keywords=potette+plus&psc=1