✔ 最佳答案
Every employer has the right to set their own rules. It may be that this is the busiest week of sales for them and they want all hands available. If you are unhappy with their rules, find a different job, or open a business for yourself.
You do have the right to ask, and perhaps for a wedding they will make an exception, but if they make an exception for you, then they will for others as well, and they set out these rules for a reason.