small drop of tea (no sugar just milk) on mouse track pad

There's basically nothing you can do other than give it some time to dry out. The drops may or may not have leaked inside and there is no way to know if any did unless an Apple technician opens your MBAir and checks for water detection.

If you had spilled an entire cup of tea on your MBAir that would be quite a different matter! And it would be potentially more serious if the tea had gotten on the keyboard. But you said it was just a few drops on the trackpad; and of that even less in the corner.

You do have to restart your Mac in order to see if there are any problems. Restarting alone will not cause any problems and your MBAir will not break from doing that. *If* there is any problem it may be something with the trackpad, but you must use it in order to tell.

Hi,

Try to insert paper into slit between body and track pad and see if paper is wet. If not, you are probably safe to start up your MacBook Pro.