If it was me, I'd service the bike before leaving, and then leave a lot of the tools behind. The chances of having problems with the cones or bottom bracket are small, and if you do have problems there are bike shops along the way.
I would also bring my own soap and shampoo so I wouldn't have to wait to shower if there are multiple showers in the place I was staying. Showering simultaneously can mean the difference between cooking dinner in daylight, and cooking in the dark.