Sorry what? If you have a current sub then visit the dlc areas and you will automatically get the associated bonus collectibles (a pet from orsinium and hews bane, a personality from the gold coast and the hist dungeons). After you have those collectible they are yours, even if you unsub. If you don't currently sub you can buy the dlc and get the bonus collectible (unless you already had them).
No dlc comes with an exp boost. Hmm... the more I read my answer the more I think I don't understand your question.
#1 tip (Re)check your graphics settings periodically - especially resolution.
I believe you are thinking of the collector's (?) edition (like the bear mount and pet edition for orsinium). I don't think that they are currently availible, so no you won't get the pets and xp scrolls.