I think the tour is small group of 8 max. If you have enough friends and family can easily take up the whole car. I did two tours and had 4 in one and 7 in the other max. The vans are comfortable, one was VE Multivan and the other Ford Transit.

We reached back by 6-7pm, but it depends on your tour group and how long you spend at each stop :)

I went during mid-September, would definitely suggest bringing a normal jacket (doesn’t have to be the thick winter jacket - anything for autumn weather would do) along because it does get quite chilly if the sun isn’t out (it unfortunately rained during my visit). Not too sure how long the hike was, but is definitely doable regardless of whether you’re a hiker or not. I’m severely anaemic so my stamina is awful but the tour was absolutely amazing for me :)

I think the hike itself could be done with the hiking backpack (I assume you’re used to it). I think the hard part would be the travel. We were in a van that was full with 9 adults for several hours that day (at least a couple 2-hour stints). Unsure of how that would work with a one year old. Just something to think about! I’d contact the tour company directly to see if they could do it though. ◡̈