Usually the acusation is made because we do not believe the Trinity doctrine the same as you do.
Is that what you are getting at?
How about the dancing?
Dancing is not a problem. That is ultra-Christian fundamentalist legalism which is false teaching in the Christian church. The main issues are on the substance of the faith(Trinity, person of Christ, views on heaven. afterlife etc.) and numerous other things. Read the very end of the last chapter of the Book of Revelation which is last book of the Bible and read the warning Jesus gave to the Apostle John. Jesus was not a liar and God never goes against His Word. Mormon deceit will never prevail against the Truth.