I wonder this. If they’d been told in Australia that Bonnie was unwell it could explain them struggling to be upbeat. I wonder also whether this might have had a massive impact on the activities they did the rest of the trip. Regardless of what we all think of them leaving her, they would I’m sure have been knocked sideways (even if it were just for the fact they knew this would make them look worse for travelling for so long with an older pet). Possibly why (though probably giving too much credit) they struggled with the Asian stops that were less westernised. Obviously they were only ever doing Disney in Hong Kong anyway but maybe having bonnie on their minds have them even less enthusiasm for trying new cultures or for faking an interest at the very least. Most of us humans would tend to gravitate toward activities that felt comfortable and more like home if there’s any level of emotional turmoil or sadness. They’re still mad for going away for such a long time and leaving her, but might explain the lack of effort.