Popular topic, were olds, lol.
I don't see any value to playing travel sports at that age. They certainly aren't getting any sustainable instructional advantage. At that age reps and building love of the sport and being around the team are the most important things they can get. My now 11 year old played rec soccer from 4-9, I coached her and she had fun playing and with her teammates. Last year we had her playing travel soccer. Professional coaches, individual instruction, uniforms even for practices, but she hated it. This very well may be different for girls than boys, but because of the pressure of always having to compete for your spot the social aspect of the team wasn't nearly as close. Also those travel teams have a high burn out rate. She is back to rec soccer this year. I just need to make sure she loves the sport enough to play when she gets to high school.