Smart cats don’t eat, neither read crap, even on summer holiday. The good news is, whatever remote place for their holiday has now either electricity, or solar power available for cooking and reading (with exception of certain no-wifi areas overseas).
Some e-reading smart cats are Kindle addicts. Whatever works, as long as they are happy.
Some smart e-reading cats are somewhat more oldschool and prefer traditionnal sofa reading and “pdf” because it looks more familiar and can easily be printed (or they just like the French Youscribe MarketPlace). Whatever works, as long as they are happy.