This was much better than anticipated; we spent 4 ...

This was much better than anticipated; we spent 4 hours with kids, and could have spent 2 more. Go to the website and order tickets, pick them up at the group kiosk, it was very easy and quick. Waited 2 minutes on a Friday morning to enter and waited 20 minutes to see crown jewels. Definitely catch a Beefeater tour (they are free and run every 30 minutes or so). It was very clean and well organized with easy, accessible restrooms.