Just wondering why it takes longer to receive tapes around the holidays. This is my first time ever trading during the holiday

Most of my stuff has been moving faster than usual, thanks to the extra people the PO has on for the holidays. I don't know if there's a threshold, though - I've been shipping stuff out for eBay sales, primarily to the UK, Australia and Canada (where I guess they don't have easy access to Buffy action figures!), and I didn't ship anything out between the 22nd and the 28th. But almost everything I shipped in the week before Christmas (either priority or global priority) has arrived, even to Australia.