Yes, of course.
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...
No it is usually a large formal dinner. They may, it depends on what time of the day the wedding is scheduled.
Something festive , but don't outdo the Bride, and comfortable todance in.
Good question! You'll have to ask about that.