We found very simply instructions for rooting our Galaxy 7.0 Plus at the xda developers forum.
Copy the zip file to the root of an external microsd card.
Restart in Recovery Mode – press and hold Volume Up while powering up.
Use the volume up/down buttons to move the highlight up and down, and the power button to select the highlighted option.
1. Select “apply update from external storage”
2. Select the file you placed on your storage card (starts with “p6210_CWMR”.)
3. Sit back and watch it run. Read the information that is being sent to the screen. If there’s an error, it’ll display some message. If it works, it’ll display a message starting with the word “Done!”
4. Select “reboot system now.”
You now have a CWM-based recovery installed, and your tablet is rooted.
Install the SuperUser application directly from the android market.
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The attached zip file is from December 10, 2011.p6210_CWMR_20111210