So I go to meet my recruiter tomorrow for the National Guard. Any advice?

Don't go. Rich old politicians that have never nor will ever know you then get to decide where you go, what you eat, who you kill, and if you die.

Reconsider joining the military.

Make sure you know what you want to get out of your time there and make sure the recruiter dosnt fuck you over. The recruiter need numbers to stay a recruiter so work him don't let him work you . Also take someone older with you.someone you trust. And don't be afraid to tell the recruiter no
You life may depend on this decision so be sure your comfortable with your decision

you still have time to escape

Well good for you !
Advice ?
All I'd suggest is that you look smart; listen carefully to everything they tell you.
And if you don't understand something, be brave enough to ask for clarification.
Good luck !

Go active duty much more fun than the Guard.

Head butt them and say have that.