How do you find travelling with toddlers?

Hi IMs,
I'm taking my toddler to see my family overseas in Jan and we'll be there for 2 months. My toddler, who is currently 2 years and 5 months, has always been shy and uneasy when outdoor. This is because I take him out only twice a week for his activities and hence, he's not used to being around people much. My hubby and I don't have a big family here and I spend most time at home. My toddler normally doesn't want to eat when outside but he is back to his normal self once he gets home.
I'm curious to know if there is any IMs out there that's experienced a similar thing with their kids? Like maybe you've travelled with your kids and the change in time and place have affected their feeding and sleeping? What did you do to overcome it? Thanks!