around 3.5USD (+3USD if you get the orca card but this amount is included in the card as well).

you need to contact sound transit.. I have seen vehicles with multiple tickets so I am sure they are ticketing, each ticket is $55

board that ferry at Alaska way .... take the light rail from the University to Pioneer Square and walk to Colman dock, eight minute walk be aware that University street is no where near the University I use light rail from the University often, be sure to buy an ORCA card, you can do that at the UW link light rail station machine or online.. this form does not allow me to post links

I stayed at worldmark. light rail is everywhere, and easy to use. I wouldn't worry too much about where to stay. go online and take a look at the stops. downtown, you can catch it right there next to nordstrom.

Yes depends on which station. I use a cane for bad knees and balance but always used the stairs up and down without a problem—but a few grunts.

You will be ticketed and towed if you have your car parked there overnight, it is a lot for people who commute daily. I recommend Uber/Lyft to the station then going to the airport on the light rail.

No, The Tukwila Train Station is at 7301 Longacres Way is only a few miles from Sea-Tac International Airport. Amtrak Cascades trains take you to Mt Vernon.

Yes, it is. You can board the light rail at the airport and exit at the King Street Station.