i am hiking to harpers ferry i need to send a mail drop what is a good place to send it to ,the AT office, comford inn that im staying at over nite,post office and i need the hours they are open

PO - M-F 8am-4pm Sat. 9-12
ATC- M-F 9am-5pm weekends 9-4 call to make sure 304-535-6331