大驾

imperial chariot / (fig.) emperor / (polite) you

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

surname Jia

to harness / to draw (a cart etc) / to drive / to pilot / to sail / to ride / your good self / prefixed word denoting respect (polite 敬辭|敬辞[jing4 ci2])

we are honored by your presence