And goodness there are so many to choose from.
You could of course, attend the Marriage Mart at Almack's or the Assembly Rooms in Bath (it cracks me up that the Assembly Rooms there are in Bennett Street) or take the waters in the Pump Room.
You could attend a coronation, a hot air balloon ascension, the Queen's Drawing Room or any number of other events.
Number two would be one of the gambling parties held by Marie-Antoinette or frankly any other titled or wealthy lady.
Number three would be one of the Devonshire House Galas for the Whigs.
Number four would be Venice during the 18th century.
I'd also like to have seen the coronation of Elizabeth I and the Armada but I'm wandering off century badly now.
So if you could get into your time machine or a DeLorean DMC-12 with appropriate modifications and travel back, what event in the 18th century or Georgian history would you like to watch or be a part of?