I had my son attend a regional showcase the summer between freshman & sophomore year...Gave him an opportunity to get the lay of the land, so to speak. Last summer, his travel team went to J.O., & East Cobb. Then he attended PG Top Prospects in Waco, then a couple more tournys thru the end of July..After a couple weeks, fallball started & went thru Nov, including a showcase circuit kind of thing, & WWBA in Ft. Myers, Fla.
All in all, I think he benefitted.
In N. Texas area, it depends on the type of select team he's on & who the coaches are, as to whether they are flexible in allowing your son to "fit in" a showcase or 2. Some don't want to "loose a player if they get picked for J,O. Team. Some have ego's the size of the moon, some don't like showcases. My son's coach is in it for the kids & getting them to the next level, so he's all for putting them out there, & this summer has told us that if the invite comes, GO!! He'll be rooting & talking to make things happen, opening the doors, so to speak.
Concerning Camps, there are several articles on this site that explain how that situation works...It's more of a money maker for the college as opposed to strong instruction (IMO).
Son goes to a winter camp, so it doesn't interfere with summer travel, & to stay in touch with specific recruiter & coach.
If you REALLY want great training + alot of high quality baseball, check out
www.burkburnettblacksox.org in Burkburnett Tx. Don Patty runs the school...for about 8 weeks, "students" are dormed & eat sleep breathe nothing but baseball. They play about 70-80 games thruout Okla & Tx. Usually he's got a team for Connie Mack. For the money, it's great!
Good luck, & have a great summer!