This is probably very obvious to most of you but I saw a few comments about being able to import Macros, just use Notepad. You can write all your macros in one single file then just copy and paste them in, it's a snap. I also recommend copying your character sheet out of the Bio before leaving you can do modifying like leveling and next time you play, paste it back in with your adjustments, good time saver. One more thing you could make multiple copies of your character and use it in different campaigns.
For those who didn't think of it, Notepad very Roll20 friendly.