Besides payment, what else can delay my order?

Incomplete or invalid Fedex information.

If you provide a non fedexable address for an order scheduled to ship via Fedex, your order may face a lengthy delay.

If you do not provide a phone number and the delivery person has troubles with your address, you may also face a delay.

If your order is going to APO's or Canada, you may face customs delays, although that should be rare.