I have a few 1/2 gal milk jugs of ice in my chest freezer and put them in the camper fridge the night before we go. If I put the TT in the driveway for loading I'll hook to shore power (110v/15amp) and let the fridge cool on that (with the milk jugs too).
If we don't have such time, as we won't this month when we go to gettysburg and I work the night before and have to unload the truck and need the driveway, then we'll just pack w/ ice and then fire up the propane and let it run on that. I try to never put anything warm in there and often will travel with a milk just of ice in the freezer - easy enough to drain or pitch it if I don't need it for the trip home.
If the TT is left at the CG we leave the fridge off and bring a cooler with the milk jugs of ice to cool the food. It takes a good 4 -6 hours for the fridge to get back to 'cold enough' when stocked up 'warm' with cold food/ice packs and turned on to elec.
Jill & Chris, Wills (14) Evie (11) & Toby our collie (5)
2011 Grey Wolf 28BH
2013 Chevy K1500 Crew w/ Reese StraitLine Dual Cam
Nights camped 2011: 11 2012: 18 2013: 12 2014: 12 2015: 13 2016: 3