Under "Vending Machine", I propose:
Drink Vending Machine
Newspaper Vending Machine (would be used for anything that offers
newspapers, magazines or similar be it free or paid)
Smart Card Recharge Machine (i.e. machine that can be used to recharge
transit smart cards/stored value cards, my local transit system has
different machines for recharge and for sales of normal tickets)
Drinking Fountain (i.e. any place to get free drinking water)
I also propose an entry for Toilet, then under that I propose
Male Toilet
Female Toilet
Disabled Toilet
Parents Room
Separate entries are necessary as not all stations will have e.g. disabled
toilets
An entry for luggage lockers may also be worth adding
I also think it would be usefull to have an entry to indicate that a
stop/station has a staffed information or ticket kiosk (that may sell
transit smart cards, recharge such cards, sell tickets, provide
timetable/route information, issue concession passes etc)
Not being a feed publisher, I have no idea exactly which items feed
publishers would want to include in an "amenities" list, this is just a
proposal based on the sorts of things I as a transit user (and a
user/developer of software that displays transit information) would want to
know about a stop or station (especially one that I may not have visited
before)