Yes! Another submission question!

On my most recent submission I realized after I sent it that I forgot to write the service type on the outside of the box.
Supposedly writing it on the box speeds up the process. Has anyone made such observations?
Great transactions with oih82w8, JasonGaming, Moose1913.
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I've never written service level on outside of the box and mine have always been entered within two days of receiving. Also you could have multiple different levels of service in one box sent.
Here's how it's put forth on the submission instructions:
>Package securely and mark the outside of the package with the fastest service level you are sending. For >complimentary submissions, please mark "CLUB." This will help expedite the processing of your order.
Great transactions with oih82w8, JasonGaming, Moose1913.