Aiko, I am really concerned. A 10 day walking trip in a very rural area when you are beginning to detox is putting yourself out of the reach of immediate medical care if necessary. If you are on a number of substances like me (I detoxed from alcohol and benzos) it can get really tricky very quickly.
I did a 3 day inpatient detox under medical supervision. The first month I was a bit erratic weak and confused. I worry about you being in a situation where you might have to press on because of others and not be able to get help quickly.
I know you have struggled with this. I understand this is an important holiday to you, but could you use the time to go to rehab?