Chinatown have alot of all the GDL stuffs but not as cheap. I think u need to refer back to the old posting here to find out the places.
Ur MIL are not suppose to come along during the GDL. Ur hubby can come along and he can ask either his friends or someone elder in the family (like his aunt, sister) as Mei Po to hand all the GDL stuffs to ur parents.
to my MIL, she also see whether the "Mei PO" crashed with anyone in my family especially my mum and me cos they have to hand the GDL to my mum mah. Like Dog and dragon etc etc cannot cos they crashed with each other.
So really depend to wat extend of Patang-ness both parents are.