So what have we learned in this thread so far?
1. You are nothing to anyone, so act like it.
2. You should always gear your entire presentation toward the most stupid and music-illiterate people in your audiences.
3. Practice schmactice! Just play any old bassline. Doesn't matter even if you're in a different key.
4. Hell, just go home. Nobody likes you or even cares about you even a little, and your only real function is helping with setup and teardown.
The adages of the working bassist.