My parents are in their late 70s. Their fight to SGN departs at 6:30 p.m. (NW 27 gets in @ 11:50 p.m. the night before), so they will have some time to explore BKK ... so for their comfort and convenience, I already booked a package @ a hotel in the Silom area (with RT transfer and late check-out).

My biggest fear is the lugguge ... and it seems that they can check them through their final destination.