Having just experienced this from the perspective of a Rec/All-Star player wanting to move up to travel, I don't have an issue with teams reserving spots, but I do wish they would be honest about how many spots were open. She tried out on two different "open tryout" days for one team, and six of the girls there were wearing the team jersey and multiple others were clearly known by the coaches. That's fine, but we heard later that she took all the remaining first year 12U girls in order to build a team for 2 years. In other words, they didn't take any new second-year 12U girls. It just would have been nice to know since the advertisement indicated that "all positions are open."