Theatre/Concert Hall/Opera House - represents observing the 'play' of your own life...the thoughts, feelings, hopes, fears, fantasies you have built up over the years.

Cemetery/Graveyard - A cemetery is a collection of dead organic matter. It's a sad and depressing place that doesn't reflect any joy, and reflects even less hope. If someone close to you has recently died, it would be normal for you to have dreams about graveyards and death. The graveyard in your dream may be a reflection of your mood or unresolved grief. It may literally represent sadness that comes from losing someone that you love.
However, if this dream is coming up and there has been no death in the family, consider your feelings in daily life. If you are feeling depressed or helpless in any way, look inside yourself and make attempts to increase your self awareness and your spiritual identity. It could represent things which require deep thinking and are not 'on the surface'. Graves could also symbolize the unconscious, and it could represent your past and long-gone experiences.

If you are walking through, or sitting in, the cemetery, it might be a sign that you are seeking peace and quiet. On the other hand, it could signify that you are holding onto the past. Your subconscious might draw the graveyard, if in real life you are under pressure and need to make a decision, or you are too preoccupied with your past experiences and want to bury them.

Funeral - represents your feelings about death.

Great-grandfather - usually the elderly represent wisdom, patience, guidance, and experience.  They serve as life lessons....to learn from their achievements, as well as their mistakes.

Arrive early - represents anticipation, and feeling the need to be prepared.

Lifted - To dream that you are being lifted, suggests that you feel you are rising above unpleasant conditions or issues. 

Mother - represents, nurturing, wisdom, the subconscious, intuition, natural and instinctive life, and more experienced part of feminine self aspect. Also, your relationship with your mother. That the dream isn't about your Mom, but she is there, suggests you feel the need for guidance, or support.

Relatives - usually represent an aspect of yourself relative to the character of the person in your dream. Sometimes represents your family traditions, subconscious attitudes, conventions, or even talents, that are part of the unique psychological and social environment a family provides.
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Have you had a life-altering experience recently, possibly life threatening?
Is there something, or someone, that has brought up thoughts of your great-grandfather recently?
Are you feeling the need for advice, or guidance, in some area of your life?
Do you feel the need to 'rise above' a current situation?

Hope I could give you some insight, good luck!