If I have an important event, would it be safe to get Rejuran a few days in advance?

My skin looks dry and dull, so I'm looking into Rejuran.
My friend's wedding is about a month away, so I want to choose the date carefully.

I saw in the reviews that some areas might get raised like embossing or develop redness 😳

How many days do these marks usually last?
I'm wondering if it's best to get it done with some time in advance if I have an important schedule.