I have a high opinion of the minicamp (after observing fiddlemath before and after the camp, anecdotally I'd say he "leveled up" in notable ways that would be worthwhile for me), and I'll probably apply. That being said:

This post gives off bad vibes to (my mental model of) outsiders- I wouldn't be comfortable showing it to a non-LessWrong person and saying "This is what I'll be doing". I'm holding the post to a pretty high standard, because signaling matters a lot for an event where you're asking money from people and putting them through an intensive program (it pattern-matches things that people are wary of, from "multilevel marketing seminar" to "Christian retreat").

Some suggestions:

• Providing an estimated cost breakdown (from last year) rather than a vague statement ("most of it is meals and lodging") would go a long way toward showing that whatever this is, it's not an SIAI fundraiser.
• A specific example of an exercise from last summer's minicamps would be much better than a description of how awesome the exercises are in general, both for reassuring people that there's content to it and making people excited (as I was when I heard some of the things you did).
• A (partial) "program of proposed topics" would make it look substantially more serious: which instructors have which particular focuses?

Like I said, I'm already interested, and I already know that this info exists; but explicitly showing it will vastly improve the signaling value, and remove the inconvenience of having to convince one's friends and family that this isn't an obviously cultish thing.