I will shortly be visiting Brunei for 4 days on business. I have never been there and know very little about it unfortunately.

I would appreciate any information:

Arrival formalities at the airport
Airport-hotel transfers - taxis or hotel limo
Hotels - the empire ?
Language - is English widely spoken
What to see - the mosque, others...
Shopping - any special area, special local products
Restaurants - local, international
Departure formalities - lounge (I'll be flying Singapore AiIrlines in business)

Thanks very much for your advice.