Below is a video by IPO, the international peace observatory, about accompaniment. Unlike other accompaniment groups who often avoid using the term, IPO starts out by saying that accompaniment is a way of doing solidarity. And this video will give you an honest sense of the kind of transportation accompaniers regularly take! A lot of accompaniment is about being with people while they move from point A to point B, so if you hate bus rides, it's not for you. Love the truck on a truly bad road at around minute 5, which also gives you a sense of the gorgeous mountains these bad condition roads are often going through.
IPO is one of the only organizations that takes accompaniers for short stints. If the video sparks your interest in IPO, they are doing a training for potential accompaniers on July 14th in NYC, more info here. Sorry for the short notice, but if you're interested, they will hold another in the fall.