Where are you going? Will it be hot? Will you have a verandah / terrace?
I went away for a short break when Louis was 4 months and we managed with Fuzzi bunz in the day and normal night nappies and handwashing. I did rewash the night ones but for simple boosters for in a Fuzzi Bunz / any pocket nappy it was quite doable. We were in France in the summer so drying was no issue as we had a rack outside the mobile home. Even if you only have a shower rail or something you could still get thin things dry I would say