Undecided Question

Eyebrow help?! Two questions…?

I'm going to the mall on Saturday, around 3 to get my eyebrows done.
But I have a B'not Mitzvah to go to at 6.30 that night.
I'm fair skinned, and about 2/3 of the products I use don't irritate my skin.

So, two questions:

Can the swelling//redness of eyebrow waxing go away after about 3 hours?
(I'm only getting a bit off the top, the bottom shaped, and the middles rounded. Not much is coming off)

How much would it generally cost to get that ^^^ done somewhere at the mall?

Where can I get it done cheapest? (Hair salon, nail salon, beauty salon, etc.)
I'm not really looking for someone to do my brows expertly, just a simple waxing for them to get more clean-cut.

Thanks so much!