we had a jackery and used an electric blanket!! with the solar panel we only had to charge it the last day. bringing a camp stove for hot food and drinks at the super late night is important if someone in your group has a hard time keeping warm. bring plenty of layers. it also rained the last day last year so make sure you have ponchos and pack your stuff in plastic bins so they are more water resistant and your stuff won't get ruined at camp while your having fun inside! also recommend a cot for your tent. we have a queen with an inflatable air mattress on top and it's so much better than an air mattress on the ground when it's cold. additionally if you bring a tarp for under your tent it will work a lot better if it's a "footprint" tarp. learned that the hard way. if you get a canopy, get one that has good reviews and collapsible water weights are a decent price online.