I used the Hotel in T3 to shower, $13, not bad. On the outbound, I used the a gym for 2 hours and the shower after that, I paid $20, not bad. If I were you and no lounge access, I 'd go for the GFORCE ckub in the hotel T3.Then if you have a GOLD MC, feel free to visit the MAHARABA lounge for 4 hours, food and booze not bad.