I'm assuming by Convention Centre, you're referring to the one in Hong Kong? If that's the case, you're most likely staying at the Grand Hyatt since the Renaissance is hardly a 5* hotel. Anyways, you should have no issues bringing WG into the Grand Hyatt, regardless of class. The only "high class" escorts you'll find will be the ones on the internet, but I doubt their authenticity. It would be best to walk a few blocks down to Lockhart Road in Wanchai where all the fabulous are located. Try out Neptunes. Tell them xavier sent you.