Do they allow cameras at Disneyland Resort in Anaheim?

I have a Nikon D200 with a bag and lenses, I was wondering, does anyone know if they would allow me to enter with it to Disneyland? And do they have vegetarian dishes and in which restaurants in Disneyland?

You should have no problem with the Camera depending on exactly what lenses you are bringing. If you are brining the standard 35-70mm range lenses you should be fine. If you start to bring the larger lenses they may consider those "professional" lenses and not allow you to bring those in. It is really up to the discretion of Disney, but in general if you are doing your photos for personal use they generally won't care.

Just keep in mind none of the rides have storage, so unless you want to rent a locker everything you bring in you will be carrying all day including on the rides. There are some rides(such as any movie based attraction(Star Tours, Sorin' over the world.etc) they do not allow any photography. On others you can do it as long as you don't use your flash.

Just about every Table Service Restaurant and many Counter Service Restaurants will have vegetarian dishes. You can go to City Hall when you enter Disneyland and ask for a list of specific restaurants.