Well some idiot tapped my car and made a dent about a foot long on my side fender right in front of the rear wheel well. The dent has no crease and looks like I can pop it out. Could someone tell me how I can take out the rear interior side panel to gain access to the rear fender?

 

I would try to get to it by removing the driver side tail light and go in through there using one of those "dent massager" rods (whatever they're called).

 

I wouldn't mess with all that, get someone from dent wizard or something (a professional) to remove the dent. It should not cost over $100 from what I hear.

 

The rear seats need to come out, then the panel unscrews & unclips out.

 

https://acurazine.com/forums/showthread.php?t=168436

Look at this thread. It's a DIY for doing the rear shocks and dampers but it specifically tells you how to remove the rear seats.

 

That is the best route to go