Welcome to FT, missregangrace. I've not flown TigerAir, but turbulence is not something that is airline specific, nor does it matter what part of the plane you're in. Pilots generally try to avoid it because it's annoying, even to them, but not dangerous to the plane. I believe TigerAir recently placed a large order for new aircraft, though whether these are in service I do not know. You could check your particular flight, usually the website should tell you. Beyond this, there is very little we can tell you; we also don't have a crystal ball!