Yes, they have a lift and ramps as well.

The War Rooms don't provide tours - per se - just a self-guided audio tour (which is excellent!). I suggest booking ahead because that line moves faster than the line for people who just show up. Price is the same either way.

We did the self tour. When we visited on a weekday morning there wasn’t a line. With the self tour you get a listening device that is very useful.

I recommend getting tickets in advance as queues can be quite long.

I would assume they would let you in. Ask the docent who stands out side the venue. They may let you in thru the exit

When we were there in the spring, this was not included as part of the London Pass. It is still relatively affordable, and well worth the price.

Para mi - minimo 2 horas, pero puede ser mas, dependiendo de su nivel de interes en la historia.

I would suggest booking as close to the time that you think you will be arriving. Or giving yourself ample time. If you have to wait a few minutes to be admitted, that is fine. You walk through on your own. And, depending on how big of a WWII buff and Churchill fan you are. Which, I am both. I would give myself at least 2 to 3 hours to go through and experience everything. Enjoy yourself!

No you didn't when we went.