Indeed but there's also many other nationalities behaviours that I could mention at this point that would get me roasted for stereotyping them. However it's fine to mention one off incidents like you have.
What's not fine is describing Spanish People as being revolted by Brits and their holiday choices alongside all the other really negative descriptions in Aurynne's posts.
If I went on a thread and said:-
"Goodness the Spanish are a bloodthirsty lot, they love bullfighting"
"Spanish teenagers love doing anti social graffiti don't they? I see it everywhere when I go to Spain"
"Spanish people especially the police are all unhelpful, rude and surly"
I would be rightfully roasted.
SOME Spanish do the above, I personally have had experience of the second two but it would not occur to me to lump all Spaniards in with that.
SOME Brits act like total idiots when they go on holiday, agreed, then it's further sensationalised in the media and we just lap it up and pile in ourselves. I've seen the odd bit of crap behaviour myself, I go on holiday there regularly, but mostly I see young families and couples just having a lovely time in the Sun.