Obvs Temeraire was there in his best eyepatch that he only wears for special occasions. At the 'does anyone object' point anyone with the audacity to so much shift in their seat would have been the object of a look complete with baring of three-foot-long teeth.
Once the dancing started he went to his pavilion to 'change', and came back in human form so he could join in. Apologies to his partners who quickly learned that he's still not super graceful on two feet, especially after a few sips of champagne which he is definitely allowed to have because he is a general and a member of parliament thank you very much, even if he still looks like he just snuck out of high school.
Any of his friends who wanted to camp out in the pavilion overnight were welcome!