Hi jas77,
Congrats to yr forthcoming wedding!
The Op mgr will arrange a time with you after u had chk in the hotel to brief u on the details of dinner eg, collect portrait & whatever u wan to display at recep, the routine of dinner.
My advice is make sure all yr helpers will be there for this briefing so everyone will clear.
I do not request for a dayroom so can't advice you much on this.
Normally for dinner to start it depends on yr guests arrival time & after 2nd dish(which is sharkfins, boy! I hungry now) the op mgr will inform u to change gown & for my case they call me in my room to tell me get ready to go down. Don't worry, just relax as definitely u will be treated like princess & somebody will be at yr side to tell you what to do next!
Sorry for being loso and hope this info. helps!