All 4 walls have mailboxes. We do have package lockers below the mailboxes and on one wall. They can only be used by USPS. The table is moveable and USPS uses the table when they are distributing mail. The room is about 12'x15'. The table does not give a mouth clearance if turned the other way.
I would suggest looking in to Fetch instead of doing lockers. Fetch recieves the package in their local warehouse and then delivers right to the resident’s door at a time when they are home. Hardly any additional package wait time (nearly none - seriously). They deliver packages of small and very large sizes.
Oof yeah given the amount of mailboxes that’s a pretty decent size community. Especially during the holidays that room would be filled within a few days. I also suggest Fetch.