I second jjwjjw's comments. I can tell you that I also booked a Classic room using the Amb certificate rate (blo*dy inflated but okay) and another subsequent night at our corp rate which at this property just gives a 15% discount over best flexible rate I think, but that is better than booking all your nights (e.g 4 or 5) at the certificate rate which would be a waste of money.

The upgrade after my fall from RA that I can see online and confirmed through email by hotel is Classic room to Singaraja room which works just fine for me. Anything better upon arrival and I will be happy. Club upgrade is never happening unless you pay a cash supplement which was roughly 100USD a night I think. However, with the changes in Club offering (no all day menu items) and a plan to eat a lot outside of the hotel (incl. breakfast at some newish brunch places) I'm not inclined to pay that Club supplement. This works for us but may not be the right thing for others.

Definitely save the 30$ for food. Maybe consider a rate with breakfast as I have ot admit that that is pretty good at the IC and worth the money if you like big, lazy breakfasts.