Thanks folks. Being a guest with status mean more options, and obviously a lite breakfast at lounge would always be the option. Also different hotel restaurant management system would have different issues, i.e. the lounge at Hyatt Regency Sydney, they have a print out guest name, that normally means the second visit you need to tell them that you're re-entering. Some restaurants checks room number on a computer, with no bills to sign, some would send a bill to sign...

However, if I am entitle to have restaurant breakfast, at anytime during breakfast, why not.