Sunday, if all Taxis are on the road, it will not be so easy,
and more so, is a rest day, no surcharge, family and friends just
share and hop on just to enjoy a ride rather than everyday bus and
MRT, and most TDs are off, if cannot find relief, they just drives
half day to cover the rental or forgo it altogether by driving more
on sat and fri. So, you end up, less taxis on the road, more paxs
and more returning flight with more peoples who do not want to take
extra annual leaves.
I was there at T2, 4.45pm, drink kopi with buddies, knn, the
airport polices came and chased all of us out, all go take paxs,
png, most thot can wait for 5pm...even those inside toilet also ask
to go in fast fast 
wat to do?? me prefer go t3 cause can park 1 side lim kopi no 1 can
come disturb u ~~~~~