I used points for my first class points. However, it is very unusual that one can use United points to get either business or First Class seats on Singapore Airlines. I was lucky as flyertalk website indicated that Singapore Airlines opened up First Class seats inadvertantly during a system change for a few days and I was lucky enough to take advantage of this!!!
yes jasper Singapoure airline is one of the best in the world. i cam all time with Thai Airways first class
when i cam from phuket , bevore i go in the Lounge ,i get a 1 hours spa free.. and the first class lounge
is extraordinaire.. and then in the plaine , the starter is Kaviar ,i order via internet my menu. .
and whe only six passenger , in the the first class,, on my return flight to Paris it is the A 380 , there you have 8 Passenger
I return the 17 this month, 6 months hard holidays will be finisch. .and .in 6 months i will be back. .. nice Asia