How Will A CPA Reimburse What You Spent For Company?

I used my own credit card to buy things that my boss said was Ok for my company. What will a CPA do when I take my transactions, receipt to them? Take money from the company’s credit card account or basically my boss’s account? How will they reimburse me?
So either way all I do is take my credit card statement, my receipt and just walk into a cpa?

I do have my gas receipt I saved when I used my car to go meet clients.

Are cpa firms open or closed on federal holidays?

My boss says that no CPA firms close for federal holidays from Jan 1 to April 14. Is this true?
I am not a CPA, but rather a clerk.
The accountants are busy, but the phone is dead, no mail to process, and I am sitting here resentful that I had to pay for a babysitter because school is out.