His comments come after recent reports which raised the possibility that the resort would not be completed on time as a result of the global downturn.
Mr Roberts said the resort is seeing 'tremendous' demand for its facilities.
The 77th UFI congress in 2010 is so far the only confirmed event announced to the media.
But there are more on the way. The integrated resort has received around 78 'expressions of interest' for meetings, incentives and conventions up to 2014.
It has also received more than 60 enquiries about its exhibition facilities for shows up to 2011, spanning industries such as maritime and semi-conductors, luxury consumer goods and textiles.
When asked about the take-up of retail space, resort vice-president George Tanasijevich said it was continuing to target high-end tenants.
He declined to elaborate further.