The lettering can be reattached with 3M tape. You cut a piece the size of the letter and use an EXACTO knife to cut out the excess tape. I do these a lot, works very well.

As for the spoiler area, looks like a water leak to me. check around and see what you can as far as where it is leaking. I would use some white lithium grease and lube up as best as I could with out over doing it. Should be fine, just find the source.