I think it boils down to what your daughter wants. There is nothing wrong with playing games for 2 days in front of many colleges - it's exposure. Period. You have no idea if anyone has been recruited from being seen at the UA 150, a school could notice you there and then continue to want to seek you out at other events due to what they saw at 150. Going to camps/clinics at the schools that you are 100% interested is a must, but doing these events (if given the option) is also relevant and looks good on your "resume". Again, its exposure.