10:50p, other than taking a taxi, I'd suggest taking the A11 Cityflyer bus. First stop after getting to Hong Kong Island is the Macau Ferry Terminal.
Bus cost $40, every 20 minutes till midnight, then one more at 12:30a, so you should have no problem getting onto one. Bus takes just over 30 minutes to the Macau Ferry Terminal.
Turbojet to Macau runs 24 hours.