RE: Travelling potty? or not?
If you take a potty, I would suggest the little Baby Bjorn one (not the chair) or the On the Go Potty. (Or, if DC will go on a regular toilet, take a fold-up insert that won't take up much space).
It's a hard call. She's pretty young and it's more of a getting used to the idea of pottying, I think I'd probably take a break or take an insert for the regular toilet.
I definitely wouldn't take a regular potty chair to Australia.
Baby Bjorn: http://www.amazon.com/exec/obidos/tg...=glance&s=baby (I haven't used this for travel, but have seen it recommended here before for that purpose)
On the Go http://www.onestepahead.com/jump.jsp...757&change=117 (This is the one we have. It is very low to the ground, but DS doesn't mind)
Fold up Seat Insert http://www.onestepahead.com/jump.jsp...774&change=117
Inflatable (another option) http://www.onestepahead.com/jump.jsp...153&change=117
Mommy to Justin (13 years) & Ashlyn (8 years)