Printing at office supply stores or copy and print stores is a good option if you're doing this last minute or even if you have plenty of time. If you do have plenty of time, you can usually get better results from a professional print shop.
File type to use
Generally, you'll want to download the PDF of your template with the Trim Marks and Save Paper options checked. Most copy and print and office supply chains will be printing on full size card stock (US Letter or A4) and then trimming to size.
We recommend going in with a flash drive with your files on them. You can usually log into your Templett account at these stores if you need to though but keep in mind that the employees there will not know how to use Templett.
If you are going to email them the file, be sure that your email app does not send a smaller version of the file. You want to send the full size version of the file.
For cards and anything people will be holding in their hands, we always recommend at least 100lb card stock if you can. It will feel higher quality in your hands.
Some things to know about printing at these places
Generally, the kind of people working at these locations won't know a ton about printing. They'll know what they've been trained to do but they may not give you the best advice for printing. Hopefully that's not going to be the situation for you but from experience, this is what we hear from customers. Going in with the most information will serve you well.
Most of these types of shops can trim your cards for you. We recommend asking them if they prefer to have the file with or without trim marks. They will usually ask to have them with trim marks so they know where to trim them. If they ask to have them without trim marks, that's not a problem. Just download the file without the trim marks option checked.