New Savoy Desktop Humidor Humidity Question (Thanks in Advance)

I purchased a Savoy medium desktop Zebrawood humidor yesterday.

I decided NOT to wipe down the inside with distilled water and instead I filled 2 shot glasses with distilled water and placed them inside along with a cigar mechanic gell bead humidifier, the stock humidifier and a boveda 72% bag.

I placed 19 cigars in the box (they had been purchased 2 days ago from a shop so they were in a humidor and I placed them in an otterbox cigar caddy during transport.

I have a digital hygrometer which is showing humidity at 72%.

My question is- when I open the box I'll see a drop from 72% down to 64% (kept open for maybe 4 minutes). Is this normal?

Is there anything else I should be doing??? I feel that the number one answer is KEEP THE HUMIDOR CLOSED!!!!

I did do a flashlight test and no light leaks out so that's a good thing...

Thanks in advance for the advice to a new humidor owner and I can already tell I'm going to be addicted to this!

-RR