I'll pronouce the same word different ways depending on the phrase or context.
Example: I say "Pirates of the CaribBEan" because it flows better that way, but then I'd probably say, "I'm taking a cruise to the CaRIBbean."
I also think I'd say "PeCAN pie", but I'd ask someone if they want a "peCAHN".

Re: S/O How you pronounce things, who else does this?
this exactly
W (02/2009), N (08/2012), and C (04/2014)
yep.