Shipping out day attire

I’ve been to MEPS several times so I know that they prefer you to wear jeans when you go there but is there any way I could wear sweats on the day I ship out? Nothing baggy, I just want to be comfortable because I know after MEPS we’ll take a coach bus to the airport, plane ride, and then another bus ride after or are jeans absolutely mandatory? Especially since it might not even be a direct flight, it could be connecting. I should probably ask my recruiter but I’ve signed my contract already, I’ve sworn in already, he doesn’t contact me anymore 😂