Greetings,
I have an award trip just around the corner and I need to book another one but am lacking 1000 miles. If i was to buy those miles to make my 22.5K, it would cost me $100 including the processing fee.
However, if I take the offer of Milage Multiplier offered to me on this current upcoming trip, it's half the price.

My question - if I purchase this Multiplier, will the miles post immediately (or within 48 hours), or, will it post only after I come back from my trip next week?

Thansk!