I am back traveling for Corporate for the next two years on a work project (after not traveling for the last ten years).

I just had a few questions that that I think I know but wanted to run by the experts for any tips.

I will be elite Silver next month, the real challenge is can I make gold by year end (by my count I will have about 40 nights with my current travel plans). Is there any way to get a stay credit besides a night in a hotel?

Do nights that I stay with points rather than cash count as a stay toward elite levels?

When using points for room upgrades vs a free room is it best to do that when checking in (and try for a comped upgrade vs. actually having the points charged)?

Any other tips for someone that hasn't really done corporate travel in a decade?