Here is a GMAT test day checklist and some general tips from beautiful Yosemite! Some things you can just pick up the day of (bottle of water, your ID) and other things you should take care of the night before (printing out your reservation confirmation). I'd recommend making an actual, physical list on paper so you can be 100% sure you don't forget anything!
Good luck on your exams!! Stay stoked
![Smile :)](./images/smilies/smile.png)
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https://magoosh.com/gmat/2015/gmat-tues ... -test-day/