I am the founder of Sullivanian Wicca, which is still quite in the design stage. Essentially, the main difference is that one can offer the Triple Goddess anything, not just "fresh" herbs that are normally stale by the time they are used, and you don't have to study for a full year and a day in order to become a high priest(ess), just as long as you learn your stuff (with a current priest(ess), alone or otherwise).
Sullivanian Wicca is a tradition founded by Josh Sullivan of Derry, Northern Ireland as a way to iron out the flaws that could only be seen by a soul so pernickety as Evil Little Genius. The fundamentals are as follows:
When making an offering to the Triple Goddess, it is okay to offer any kind of food, or whatever you feel the Triple Goddess would enjoy, which could include, but is not limited to, the traditional fresh herbs.
Emos are sacred.
Anyone can become a high priest(ess) if they commit to learning the fundamentals of holding this position. Obviously, some people learn much faster than others, so the traditional year and a day of studying might be too long, or perhaps not long enough, for some. Just allow whatever amount of time you feel would work. Also, in the age of easily accessible information, it is more than possible to learn alone, particularly if one has access to the internet.
Each coven meeting will include some sort of cool music with a message included that is relevant to the themes of Sullivanian Wicca, though non-relevant music can be included if it is together with Wiccan music.
Learn from other traditions of Wicca alongside other religions and values systems to see how their teachings can improve your self and life.
The difference between a witch and a Wiccan is that a witch actively practices magick whereas a Wiccan merely practices the religion. It is, however, entirely possible to be both a Wiccan and a witch. If a person does not practice magick but calls theirself a witch, it is possibly because they are not ready to start learning the craft. Give them time.