Reddit mentions of Coleman 10 x 10 ft. All Day Dome Shelter

They sell waterproofing kits for tents, sometimes called seam sealer. It's a big help. Also, when it's raining, avoid touching the rain fly to the tent itself.

Its super useful to have an open shade/rain shelter. This can be a tarp strung between trees, or something purpose built. I have on that relies on two poles and rope tension, but I'd rather have a freestanding shelter like this one. It's nice because if it rains you don't have to hang out in your tent all day. It also comes in handy when it's sunny, to have a little shade.

You really only need a lidded pot to boil water. That said, a jetboil or similar pot with a heat exchanger on the bottom makes it much faster on a stove or campfire.

I think its really useful work out a daily menu before camping. It can help you make sure you bring enough and also not too much. I do it when its just two of us, but its even more useful with a big group. Otherwise you end up with 8 bags of potato chips and nothing for breakfast.