These are normally served after the Ceremony, in the Nicolini Reception Lounge. The bride, upon exiting the theatre (recessional) and upon preliminary photographs being taken upon emerging into the courtyard, then crosses the courtyard and enters the castle by the front entrance.
Your guests then exit the theatre into the courtyard also and similarly re-enter the building through the main entrance, to be greeted by the waiting Bride and Groom for the Welcome Drinks. This marks the start of your reception.
Out of sight and in the background, you need someone to quickly and discreetly move the flowers from the Theatre to the Reception Room. Using the same display in both the Ceremony venue and the Reception venue saves you money on the floral arrangements. Delegate this in advance to one of your relatives or a member of the staff.
Before the Wedding Breakfast and after the welcome drinks, an amount of time may be devoted to the Photographer. This is his time to organise you and your guests to best effect in the courtyard and gardens. Photographers will often over-run, for they will want to get the best shots, so you need to be aware of the preferred start time for the Wedding Breakfast, which comes next. You may tell your Photographer you have allowed an hour, but actually you need to allow two hours.