Honestly all I do when I get an order is let them sit on my desk until they cool down/get to the room temp while I enter them into my online humidor here. Then I squeeze them all into my humidor.
Cigars are very resilient. By the time they reach you, they've already trucked across central America, sat in a shipping container for a couple weeks, back into a truck, maybe a warehouse before finally reaching the cigar shop. Most of that trip is made with only the natural humidity, they only get into a humidor once they get to the shop.
Couple days, or a couple % RH isn't going to ruin anything. You don't want to keep them in low or high rh really long term, but a few days or a week isn't going to wreck anything.