Keeping a dedicated room properly humidified should be easy. People going in and out of doors is going to make a minuscule difference. The room would need to be wildly out of spec. for a few days or more for it to start to be a concern: if the ideal is 45-55% humidity, them the room would probably need to be well over 60%, or well under 40% humidity for a few days before it started to have a detrimental affect on the guitars.
If they can’t keep the room in those conditions, then their A/C is faulty.
And, guitars aren’t that fragile!
My suspicions are:
- He’s lying about the humidity issue, and just using it as an excuse to cover up a QC issue
- Your location is very dry, or very humid, and someone turned off the A/C for an extended period of time
- Or someone left the A/C running on the wrong setting for an extended period of time.
Given it’s just been the Xmas period and many stores may have been closed for a few days, the latter two are entirely possible, but it’s also likely he was trying to cover up a QC issue too.
Either way, you got great service, so I wouldn’t sweat it.
It’s a lovely looking guitar. Enjoy it!
Cheers,
Keith