yeah, its an old quote from someone. but, as a canon user, I am completely envious of the top of the line Nikons like the F6 and F100. those things are machines of beauty. Canon's seem more direct in their functionality a lot more seems hidden under the hood (oh, and the minolt Maxxum 7 film camera absolutely rocked the socks off mid range canons but that was like 5 years ago.) IMHO
whereever you start you need 2-3 lenses (and remember everything but the highest end Canons have a 1.5x magnifier because the cips are smaller than 35mm film so the chip crops some of the image about a lens size...a 28mm lens with film acts like a 50mm lens on a dslr. a 50mm lens on a film camera makes the image of an 85mm lens on a dslr.)
those lenses for disney are fairly straight forward.
1. a walk around, probably zoom, lens different from the kit lens (avoid it, you'll just upgrade as soon as you realize what good glass can do). this lens is good for all kinds of outdoor shots in daylight. it will run 300-500$ and be a range like 28-135, 24-105, 17-40 (if you want wider views for landscapes or architectural shots). they will be fairly slow (F/3.5-5.6) but in bright daylight outside with a dslr (just crank up the ISO speed) all will be fine.
this lens will allow you to get the kids with characters on main street and then zoom in on the mayor passing by. its flexible, pretty light, fast to focus and will probably stay on your camera 80% of the time. plop it on a tripod, set it to wide angle and you can even shoot fireworks at night.
2. a fast prime lens for portraits and interiors.(35/2, 50/1.8, 85/1.8)
cheap doesn't always = bad. primes (single length lenses like 50mm, 85mm, 250mm) are smaller, lighter, faster (let more light in) and many times cheaper than a zoom equivalent. while a 300$ zoom will have a max aperture (f-stop) of 3.5 or 4, a prime will have a max aperture of 1.8, 2 or 2.8. aperture is like the richter scale in reverse. the lower the number the more light comes in, and it is double the light than the previous number
thus 2.8 allows twice as much light into the lens as f/4.0. f/2.0 allows 2x f/2.8 and 4x f/4.
so primes allow you to shoot inside when there is little light.
the standard is a 50/1.8 (about 75$). on a dslr the 50 acts like an 85 which gives you head/shoulder shots, perfect for portraits). the lens is small, light, cheap, very fast, very sharp. most companies also have a 50/1.4 big brother (about 300$) which is more substantial and quieter.
flash washes everything out so as a rule, I try to use as little flash as possible. want to photograph the kids meeting mickey in the judges tent without red eyes and blowing out all the highlights and washinng out the skin tones, use a fast lens and available light.
3. a telephoto lens (70-200, 75-300, 80-400) something which allows you to get close to something far away. want to get a closeup of belle during the parade. the kit lens (18-55) won't get close enough. plop on a 300 and there you go. want to take firework photos from the polynesian beach? you need a long range lens.
4. something really wide (10-22, 15, 20) allows you to fit a lot of stuff into the frame while being on top of it. stand right underneath the castle and with a 15mm lens you get the whole thing. be warned, wide angle lenses come with distortion (the middle bubbles out compared to the sides) and the wider they are the more distortion you generally get (which can be an advantage to make some realkly cool photos.)