Exactly. Every time I travel for a client they pay for everything, plus the "sandwich & juice" in the airport, taxis/trains to/from home/airport/hotel/meetings AND the hours/days from the moment I exit my home to the moment I reach the hotel. For the return, any minute after 5pm, until I get back home.

I am not willing (in order to be 9am on the client site (in another country) to spend half a Sunday away from home and loved ones for free. I usually charge 1h commute +2h in the airport pre flight + duration of flight + commute to hotel post flight.