the below is from the IWC Facebook page. I spoke to Olivier the Boutique Manager there and he suggested coming before 8 pm when its less crowded.
See u guys there !
[i]We are delighted to welcome all IWC fans to attend the Boutique Boulevard event in Hong Kong and discover the new IWC Portofino Collection. This cocktail event will be held in our Boutique located at Prince's Building, Central, on Friday May 13th, between 6.30pm to 9.30pm.
Please contact the IWC Concierge at +852 2829 2729 to RSVP and be one of the lucky few to have your photograph taken in a Portofino ambiance.
IWC Schaffhausen Boutique
Prince's Building
Shop G29, G/F, Prince's Building,
10 Chater Road
Central Hong Kong
Phone: +85228292729[/i]