No longer need On-site scheduled for Tuesday, what do I do?

[Bob34]

Here's the deal, I received my laptop on the December 27th and 1 hour into turning it on it crashed. Then continued crashing on Boot, obviously my first reaction to the constantly changing BSOD message was the RAM (I have two DIMMs). Problem is, one of the screws were partially stripped and I didn't have the tools to "safely" remove it. Honestly I was a little peeved for waiting 27 days (btw, I paid for 2 day shipping so lets say ~25 days) for my laptop so I didn't hesitate to invoke my On-site warranty which was scheduled for Tuesday for replacement of RAM and the screw.

With the help of a friend I was able to remove the screw and after extensive testing narrow the faulty RAM module. Now here's the question, will Lenovo/IBM be able to quickly divert what I need (I'm even willing to pick it up if its local just so it doesn't interrupt my schedule) or should i just keep the appointment? I have no previous experience with Lenovo/IBM support (or any support, this is my first pre-built computer) so was wondering if anyone has had a similiar experience that can chime in if doing this will result in big delays on "repairing" my laptop.