I would definitely make an appointment. It's a longer wait if you don't and it's always crowded so get in and out as fast as you can
Yes and you can fill out the application on line once you do you will be prompted to make an appointment
It's best to make an appointment the long lines now and only letting people in one by one you could be there for a few hours.
If you can, apply for your Real ID online and scan and forward the required documents. Once you do that, a code will be provided. Bring a copy of the code along with the documents you scanned to the DMV and then you will be able to get in the appointment line.
It would be faster but if you take everything with you you can get it with out
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