Kathy
packing is always a nightmare the most I have been away I think was 22 nights?...which was bad enough, if you don't have any allergies regarding soaps and shampoos may I suggest you just take some travel size ones you like! and then in between just used what is on offer, most if not all hotels provide you with something. Clothes just go for layering on and off depending on the temperature and I would definitely take a light anorak type of thing, I have a very good one for touring that is three things! a warm anorak! or I can take out the fleece lining and wear that on its own and then I end up with a very light weigh anorak I can fold into a bag just in case!.I would say pack for 10-14 days..... There will be washing / drying facility's for clothes in SOME hotels but not all of them and also you won't be the only one trying to wash a few bits through, I sorted a bag of washing out before I left so then I just grabbed it as soon as I got to the hotel and put a load on, try and time it so you can hang it on hangers overnight or if you have a 2 night stop even better. So check online to see what hotels have washing machines and mark them on your itinerary, there's no fun in walking around with an armful of washing to find no machines!!!. Hotels do provide powder you have to pay for it, and you have to pay for the use of the machine, I always carry a small bag of travel wash for those emergency washes. Take clothes your comfy in there are many, many, many hours spent sitting, Most hotels have hair dryers and some have irons and ironing boards so do research online to see what's provided. There are normally tea/coffee making facility's to. So I normally pick a few extra tea bags sugars etc up from the breakfast table so I have a stash to use as well, I do like a cuppa TEA!..It can be hard taking food stuff into these countries by air, so I do not bother.
On the NZ tour where we just had say 1 night in hotel, we found it a good idea just to put what was needed for the next day in a small hold all, less for us to unpack and worry about and it SAVED the driver hauling everyone's large cases off, so if you can try and get a very lightweight hold all, or even use it for you hand luggage on the plane.
think that's it...
Make sure your drinking plenty of water, embrace the long flight and enjoy the fantastic tour. saying hello to OZ and NZ from me...
Cindy