Thanks for the ideas. We definitely want a place that has tables to sit down. In the US, fast casual is usually places where you place your order at a counter, pay for it, then go sit down at a table and they bring the food to you.
Any suggestions of how much time minimum to allow before we pick a time for the War Rooms? I was thinking if we did the Abbey at 9:30 and they say to allow 90 minutes-2 hours then maybe do the War rooms at 2 pm which would allow us plenty of time to get lunch and get there a little early? I did the Abbey in 2017 but don't remember how much time we spent there. Our traveling companion has never been.
It was so much easier when we were in London in 2017. We did purchase some advance tickets but didn't have to pick a time!