Yes, of course.
The best man sits on the other side of the groom (the bride on the other side and her maid of honor next to her) when having a wedding breakfast.
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Traditionally, after the day of the wedding ceremony, there are seven days of celebration in reference to the 'Shevah Brachot' (seven blessings) recited as part of the wedding ceremony. This usually includes a breakfast the next morning after the ceremony.
Not quite sure, but they had bacon sandwiches for breakfast the next morning!
Because you're "breaking" your "fast"
traditional or classical wedding is called Orthodox wedding
There is a movie called Breakfast at Tiffany's but Tiffany & Co. does not serve breakfast.
The breakfast should be the day before the wedding. Most guest cannot make it the day after due to air flights, trips back to home or hangover. The bride and groom will be tired and beat after all the planning, parties and wedding.
Before - Wedding Ceremony After - Wedding Reception After Party
Gay or straight; a gay wedding party is simply called 'a wedding party' whether it is all men or all women in the wedding party.
A wedding planner.