优待券

优待券	yōu dài quàn	discount coupon / complimentary ticket
优	yōu	excellent / superior
优待	yōu dài	preferential treatment; to give preferential treatment
待	dāi	to stay; to remain
待	dài	to wait / to treat / to deal with / to need / going to (do sth) / about to / intending to
券	quàn	bond (esp. document split in two, with each party holding one half) / contract / deed (i.e. title deeds) / ticket / voucher / certificate
券	quàn	variant of 券