>>1338122Are you going with other people who have experience? I'd recommend it if you've never been camping at that elevation before. Like other anons have said, you should acclimatize at least a little bit. Weather will be the biggest thing to watch. At 13,000' the wind can be brutal, like literally blow you off the mountain brutal, depending on where you camp of course (if you're not shielded by a ridge, etc)
>>1338127 this anon has the right idea. You'll need to make sure you're hydrated. Don't just drink when you're thirsty, but consider how many fluids your body needs and make sure to meet that requirement given the level of exertion. For instance, I can get away with three liters per day at that elevation if i'm not doing anything too technical. Think about what you've needed in the past and go from there. Do some research on all the safety stuff, and remember to plan ahead and prepare very well.
Have fun though, it's great for stargazing if your weather is good.
