Ordering take-out in Taiwan 带走 vs 外帶? This may or may not be Taiwan specific, but on all the order cards the option for take-out is "外帶".

Is this a Taiwanese vs Chinese Mandarin difference, or is this just a noun vs verb difference?

ie. If I'm ordering food to go, should I say "我想要____带走" or "我想要____外帶"?

Thanks!
In Taiwan "外帶" is used. It usually means to order something to-go. The difference between the two is mostly location. If you were in China, you might say the latter.