dear TS,
what you have asked have been heavily contested in this forum for many times, it will always be Nikon vs Canon... lest you should not be stereo-typed and consider the emerging power of Sony, Olympus, Panasonic, Pentex and many other brands.
first things first, what are your future plans on dSLR, possible upgrades or just stick to what is basic... what are your budgets as budgets means you get variations of dSLR-bodies and accessories among different brands, next... what are your needs in a dSLR, are you the kind going for all-rounder or you have a specific interest which you want to build around your dSLR. finally, do you really need a dSLR or just a prosumer or normal point-and-shoot is sufficient for your usage?
do take notices that going for honeymoon, a dSLR might be a hindrance due to its size and the lens might not be able to cover your desire range if you did not choose wisely, likewise, for your wedding, without decent flash system and lens, your wedding shots might not be great... anyway you will be the groom, in your wedding, you might not have the chance to hold a dSLR, might as well tapped onto your photographer or your friends' system ;p
PS: at the end, no matter what brand, what camera you are using, it is the skill and the user behind the camera, for me i've seen many great photographers and even amatuer users who captured great shots using low-end cameras.... photography is all about the right moment and skill, equipment-wise, it is a companion to pair-up with the right-moment and the skill of the user.
regards,
1 cent worth of thoughts