Guys, I need some advice..  

I'm currently using 50D, and both Canon 24-70mm f/2.8 and 10-22mm..

I will be heading to Perth for my vacation, should I bring both lens along? or Just 24-70mm? 
There'll be lots of opportunity photographing beach landscape, city view etc etc..

With 10-22 the landscape would be nice but I'm afraid bringing all of them will be quite heavy for me
    and it might be another problem for me when it comes to switching lenses?

appreciate the replies...