I believe that yes, they would absolutely accommodate a solo traveller. Our tour guide was very friendly and I’m sure they would make a solo traveller feel comfortable.

When you book the tour, request that you sit up front by the door, i had to as well due to a total knee replacement and my wish was granted.

My memory is that they will pick you up from the downtown Portland hotels.

I would find it very stressful taking toddlers on the tours we were on (Portland City a.m. + Columbia Gorge, Multnomah Falls p.m.). I’m pretty sure you would have to bring your own car seats, and, while much of the city tour is spent just driving around, you do stop and walk around at three sites, one of which is a historic mansion where you are not allowed to touch anything. The Gorge and waterfalls tours involve viewing the sites from tall heights. I witnessed one toddler pushing almost half his body through the bridge while looking at one of the falls - no joke, one wrong step and he would have fallen to his death. It was terrifying for me as a parent - not a place I would want to bring a toddler at all

Cannot remember exactly, but we were back in time for the afternoon tour...think around 1pm.

Call Hub World. I'm not sure, but they appear to be flexible enough (vans instead of enormous buses) that they can pick you up at any downtown hotel you choose. We stayed in Beaverton and we called them to ask for a pre-arranged meeting point. They knew of a place we could park free and they met us right on time. We reached Hub World at 1 800 637 3110.

NanP, yes the vehicle was that bad if not worse. I was trying to describe our experience as truthfully as possible without being inflammatory. Evidently Hub World follows no safety regulations. The fact that they would book a disabled passenger on a fairly physical tour was disturbing as well. Hub World was aware of the passenger's physical limitations as the tour guide/driver informed us of that.