When referring to the Catholic Church or to a person who practices Catholicism, the word is always capitalized. However, when the word is used as an adjective meaning 'universal' it is not capitalized.
Yes, "Catholic" should be capitalized when referring to the Catholic Church or Catholicism as it is a proper noun.
Yes, at the beginning of the sentence and when it forms part of the proper noun. Example. Philippine Catholic Mass Schedule The Mass Times
If you are talking about the faith of the Catholic Church, yes.
Yes, "Cardinal" should be capitalized in a sentence when referring to a specific individual who holds the title of Cardinal in the Catholic Church, or when used as part of a proper noun or in a formal title.
Have should be capitalized if it is the beginning of a sentence. Summer should not be capitalized.
It should only be capitalized if it forms part of a title.
Yes it should be capitalized.
The first 'c' should be capitalized.
Yes, it should be capitalized.
Yes it should always be capitalized.
As an abbreviation it should be capitalized.
Yes it should be capitalized.