depends on how many flights would arrive at same time as yours.. R6 S$ Y6 P) t& p, N, X! J; ^$ F
$ q# K4 V: u! Z4 ~6 {* v2 Y
when i came back in april, the customs (not the immigration office thing) took more than 2 hours. as there were some flights delayed and the queue had more than 500 people.