Sounds fun, hope I can make it!
Edit: Some clarifications to the ruleset:
1) Can you walk back to base after your inhibitor is down?
2) Can you buy elixers? If so, when? (Some people play without, some people say only after you have a full build)
3) Can you defend side inhibitors? Side inhibitor turrets?
Answers from my experience, but people have their own different rules in these things:
1)Yeah, no one said anything when I done that in ARAM before
2)You can buy elixirs anytime from what I know
3)You can only defend side inhibitor, not the top/bot inhibitor turrets.