When should you attend a fall baseball camp at a University?

My son has received several letters and a few phone calls from colleges expressing interest at one time or another, but no school has offered him a new car and condo yet He has also received several invitations to fall camps many of these same colleges/universities. He had to turn down one school he was interested in as it fell on a the same day as a football game and since ee also plays basketball, the schedule is pretty tight year round. I guess this is one of the disadvantages of being a multi-sport athlete.

Are these camps more valuable to juniors then seniors? Valuable to very few? Is playing for a scout team more beneficial? Do the Christmas/Thanksgiving camps fall into this same catagory? I know there isn't one correct answer, but I thought discussion on the relative value of fall camps to seniors and juniors might be interesting.