I didn't really care since getting my number on the website was all that mattered to me but now my workplace is asking for that letter to reimburse my test fees 😅 Hopefully it comes soon!
I took it last Monday studying with Reza's workbook and the Surveying Principles by Cuomo. It wasn't too bad actually, easier than I anticipated and I finished with around 15 minutes extra time to check my answers 😁
I think as long as you do a lot of practice problems, you should be good to go...