comments:
4 liters is needed. Dry camps may need 6 to 7 liters per person. I recommend carrying the 96 oz Nalgene Canteen collapsible for extended capacity. Film is a smellable and the packing list hasn't been updated for digital cameras. I would have each person bring their own sunscreen. I do not want to play "find the sunscreen" every morning. Same thing for insect repellent and toilet paper. The weather is described in the Philmont Shakedown Guide Part 2. It can get well below freezing at higher elevations. https://www.philmontscoutranch.org/wp-content/uploads/2019/04/ShakeDownGuideP2.pdf Education about Acute Mountain Sickness is part of the WFA curriculum for a reason. It happens. Some people get it, some don't. No way to tell until you go up. As little as safe and comfortable. My pack for a Philmont-equivalent trek—western mountains, four days of food—is 35 pounds. Stars are very, very visible. Read Andrew Skurka's book for modern gear and technique. Maybe take it on the plane or however you are traveling.https://www.amazon.com/Ultimate-Hikers-Gear-Guide-Second/dp/1426217846
Honestly impossible to recommend since we don't know where you are going to camp and what kind of camping it will be. Backpacking in the western mountains? Car camping in Louisiana? I've done both. If you are going backpacking, I highly recommend Andrew Skurka's book to get an introduction to modern gear and the techniques to use it well. https://www.amazon.com/Ultimate-Hikers-Gear-Guide-Second/dp/1426217846