My most ridiculous protestation of independence eventful trip was the day I decided that 2 year old DD, 1 year old DS in a spica cast and my behemoth of a double buggy needed to go to the Natural History Museum to see the dinosaurs. In high summer. With a picnic. Many, many members of the public were roped into helping out with that little excursion. And they were all very gracious too.
Mostly, people are fine if you are OK with them. And I was using public transport in London with my 3 under 5 on a daily basis until a couple of months ago. Mostly fine, occasional idiots being annoying but you get that everywhere.