If you pay your reservation in full before you arrive and use the early check in option fully, they can text you your campsite number when its ready for you. Since you will have your magic bands with you, once you get the text, the magic bands will work to let you in the gate (even the automated gate by the overflow lot) so you can drive in and go straight down to your site and set up - and thus bypass all checkin activities.
If you want a welcome package, you might want to stop at either the checkin lanes or the office. Or come back later to get one.
If you got a site number but want to negotiate for a different site, you can stop and go in or drive thru.
I usually stop and try to negotiate a site I want.
And to some folks, talking to the CM checking you in when they greet you with "Welcome Home", that's part of the experience some don't want to miss.
But if you do the early checkin, prepay in full, and are happy/indifferent with the site number you are texted, you can drive straight in.
Bama Ed