And Spain, thanks to one of the last Hapsburg rulers which is a long story, has a lithp when pronouncing things with a 'c', and sometimes 's'. i.e. "gracias" becomes "grathia" or "grathias."
It'll make you giggle at first but you get used to it.
There are always regional accent and grammar differences even when there isn't an ocean dividing the countries. Perfect example: UK vs. here, and all the regional accents that go along with it! Keep in mind though that in many regions in Spain, spanish isn't necessarily the first language. In Barcelona, for example, it's Catalan.
Who cares though-- just learn it and have a great time!
*edited to add: not ALL of Spain has the lisp problem but a good portion does!! Especially in Andalucia.