No real trick. IIRC you'll have to open the door all the way to get to some of the bolts from the outside; other you get from the jam area. Watch that you don't chip the paint on the leading edge of the door. Use a long extension on a ratchet. I use a floor jack to support the door...makes it easir to hold the weight of the door.
Snap on used to make a door hinge bolt wrench - it is 1/2" boxed end "S" shaped wrench, with the correct angle offset (37 degrees or so) to reach the bolts without removing the fenders.
You might be able to use a half-moon wrench.
Snap on has discontinued that door hinge bolt wrench, and I don't think anybody else makes one right now. I picked one up on eBay - they are not real cheap - I think they were $60 or so new from Snap on.
You can do it, but your hands will be hurtin when your done. You can sneak a really small socket rench in there. Helps to have someone else to help you move and support the door while your hands are in there. Be careful you dont pinch off a finger!
I bought my best one from snap on. I have a good assortment of s shaped wrenches that get to every obstructed bolt on a car. Search obstruction wrench or hinge wrench on ebay. It's easy with the right tool.