关于delivery method 的问题吗，在线等

wdx254961591UID: 2896365

请问下哥大的application form for visa certificate中
Delivery Method
How do you want your Visa Certificate sent to you?:

Courier Delivery (Cost and delivery time varies by location; most are delivered in 2 to 6 days.)
和
I will pay for courier service by bank check in US funds or international money order. (Payment must be made payable to Columbia University and must be included with supporting documents. Send supporting documents to the ISSO by mail or courier service.)
有什么区别？

谢谢了

喜宝熊UID: 3031355

木有人理你 真可怜