I made a Litecoin withdrawal to an online merchant. The merchant uses a timer- if the currency is not sent within the alotted time, the transaction is cancelled. Dumb of me, but I sent the coins directly from exchange to merchant. Unfortunately, the withdrawal did not go through automatically, probably because I'm on vacation so this took place from a new IP. I sent a support ticket to hopefully speed up the process. Asked a mod if it's possible to cancel a withdrawal awaiting approval, and it's not (coolio).

Poloniex promises that withdrawals will be manually approved within 24 hours, but I have far less than that time so I'm fairly anxious.