Hey everyone, I'm new to CO, and I have a few questions I"m hoping the travel experts in this forum can answer. First of all, I just got Platinum status through a status match ( I'm 1K with United)

1) Can you re-deposit your miles for award flights w/out a fee?
2) Are confirmed standby's free? When I travel for leisure, I tend to book the cheapest flight ( usually a red-eye), and do a confirmed standby on the day of travel.
3) Can I upgrade award travel? I'm assuming I can't.
4) How do you upgrade on Int'l trips? Do Plats earn some kind of systemwide upgrade?
5) When using award miles, can I do an "Open Jaw". For example, can I book a the trip LAX-CDG ( spend 5 days in Paris), then go CDG-LHR ( Spend a few days in London), then back home LHR-LAX, on one ticket?

Thanks!