I'm most of the time travelling with a 29w, 60w should be more than fine as long as you're not editing 4k, gaming or doing other cpu + gpu intensive stuff.
If you always stay on battery and only get to the power outlet when you're completly down to get a quick charge, you maybe should return it, it will shure charge a few %/hr slower.
Consider it's lighter and a little bit smaller if you carry it around all day.