NU,
1. How much notice of the presentation can I expect to get?
Between 4 and 6 weeks and, if it doesn’t suit, you can request a change
2. How long does the ceremony go on for, including the inevitable 'waiting time' beforehand?
From walking into the Palace to walking out again is about 2 ½ hours. Actual investiture part, between an hour and 90 mins depending on numbers.
3. How quickly are we kicked out afterwards?
Immediately, but you aren’t rushed or hassled; it’s a gentle mass stroll out to get photos taken where, again, you aren’t; rushed or hassled.
3. Where's the best place to stay the night before?
The most special and expensive place you can afford. Unless you have higher aspirations, this is a once-in-a-lifetime do – don’t scrimp. (and echo what’s been said before about eh vid and photos)
4. Can I assume the best way to get the Palace is by taxi?
Taxi will work – you’ll get a car pass that you can use however you wish; own car, taxi, or posh car service.
5. What are the potential 'banana-skins'?
Remember not to salute HM – it’s hard to suppress the instinct !
And congratulations – it really is a day to remember.
DS