PSA "on site" grading in Las Vegas, pictures of the returns of my submissions

March 2023 PSA will have an “on site” grading service in Las Vegas (Mint collective)

Now I am trying to figure out if it’s something to do for me.
I have several cards I don’t want to loose out of sight for to long, but I would like to have them graded.
Now it looks like this is what I can do. I mailed PSA if I could bring cards in person but they don’t accept them at their normal adress.
So what is left are shows/conventions.

Anybody having experience with this?

Something is not clear to me.
PSA says it’s for grading cards from regular and up. So for $75 a piece I will have a card graded and I can pick it up in 2 days.
Same for all more tiers above.
Does it really work that way?

So I put the cards in their system, but instead of shipping them I can drop them off. (and pick up in 2 days)
That’s how I read it, but is this correct?