It’s a restroom, not a toilet
Cities have a downtown area, or civic centre, not a CBD.
Be prepared to add milk to your coffee or to leave it for a while before you drink it- the coffee is served HOT.
Beware of HUGE portion sizes and order small.
Try not to check your phone all the time, especially when in the subway or emerging from one- it’s been known to be whipped out of your hands.
Ulmon have a great app City map pro which you can download the city in which you are travelling, and you can search it while you are offline or not connected to wifi. Thank you so much to Fiona for showing this to me.
Have no sense of direction? Use a compass, or if it’s a sunny day, check shadows on the sidewalk. This is especially good if you are travelling by subway and you emerge with absolutely no idea which way to walk. If you have an idea of the intersecting streets, you may find you are walking only a block before you realise your mistake and have to turn back.
Wifi abounds in most cultural institutions such as museums and libraries and in some cities like San Francisco, in their downtown area have it available for free. Good to check for locations of shops- I found that there was a Converse store in downtown San Francisco not far from where we were that day.