This is not a choice for which one is better or which one you prefer. I would like you to RSVP the one you would like to do, or both.
If you are of age (13 and completed 8th grade by Jun 21, or 14 years old), and you would like to attend Northern Tier (NT), sign up for that one.
If you want to go to Camp Cris Dobbins (CCD) Summer camp, sign up for that one too. It is totally acceptable to sign up for both.
Ignore the dates, those are not set in stone for CCD.
I'm pretty sure most everyone will go to CCD for camp, I'm really trying to assess the interest in NT for next summer.