Earning mileage question. I think this question is in regards to what I feel is an excellent deal but wanted outside opinions for a friend in doubt. Basically we'd both fly to HNL, Hawaii from SFO and EARN at least 35,500 miles EACH (no, not a typo lol). Trip is only costing us $1,100 each with flights, 5-Nights at Turtle Bay hotel and a full car. No brainer right? United agreed to honor a stacked mile promotion I found but we have to pay deposit by tomorrow. Opinions welcome and most appreciated!! Thanks in advance!