If it is one of your kids top 3 schools and you don't have to spend travel money, I'd say go for it. Maybe it puts your kid on their radar. My daughter did a couple camps like that and one D1 school became interested in her. It does happen. Obviously it is better to be asked to the camp after they have spoken with you kid.
The last camp she did was at the school she has already verbally committed to. Gave her a chance to work with the keeper coach, and in her case both current college keepers worked out as well. Two day camp and was amazing. Word might have gotten out that they weren't looking for a keeper as only her and one other keeper was there for the camp. She then got to go head to head vs both in a full field 90 minute scrimmage. Two other players that had already verbally committed were there as well, thus gave the three of them a chance to meet, as well as play together.
No matter what, if you go to the camp, email them before, once again giving links to highlights. Mine always did her youtube channel and instagram. After the camp, make sure you kid talks to all the coaches. Thank them, listen to what they might tell them. Lastly, email after the camp, thanking them. Some find great success in writing hand written thank you notes and mailing as well.