I don't know that spending time at there has anything to do with whether or not you should "allow" the use of another address.
We do at my current bank, as well as at my former bank.
Certainly POB's and PMB's come into play when discussing alternate/mailing addresses, but I had a customer with a domestic situation many years ago. As such, she did not want ANY mail/correspondence going to her home/physical address and she opted to use her sister's address. I cannot imagine what would've happened if I hadn't permitted her to use the alternate address.
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"Remember no man is a failure who has friends." - Clarence (the Angel) Oddbody - It's a Wonderful Life