Depending on where in Asia you'll be, look into one of those tropical developers that will work effectively at high water temperatures. If you go to Turkey, probably not a problem. If you head to someplace like India or Thailand, something that works at high temperatures would be a good idea. One thing you can do is shortly before your trip, when you have your first hotel already booked, contact the hotel and let them know you'll be shipping something to them (your developer and fixer chemistry), and ship powdered chems directly to them, still in the OEM packaging. I'd recommend Pyrocat-HD and TF4 Fixer from Photo Formulary. Contact the Formulary in advance and see if they have foreign-language MSDS insert sheets for their chemicals, so you can have them wrapped around the box when it goes in FedEx or whoever you ship with. If you go with Kodak or Ilford chemistry, they'll probably have those MSDS sheets in any language you might want.
I can put in a plug for Spain here. Spain is a wonderful destination - it is still one of the (relative) bargains of Europe, with great internal transportation on the RENFE rail system (you can do all kinds of route planning on their website, in English if you need to). The people are generally very nice and friendly, and there is fantastic food to be had - travel around the country and hit establishments that specialize in regional cuisine. I can give you restaurant and hotel recommendations for a number of locations in Spain. Oh, and with few exceptions, there will be nowhere you'll go that you won't have the camera glued to your face. One of the great things about Spain is the perpetual juxtaposition of the truly ancient with the modern. You can walk down a single street and go from a Santiago Calatrava designed bridge to a medieval chapel to a Roman fortification to a Moorish palace in a quarter mile.