Bring What Device on My Next Trip?

I’m going for a trip in southern Europe at the end of next week for two weeks. I’ll visit Italy and Spain from a cruise ship and the many stops that are planned. I’m still undecided as to what device should I bring: my iPad or my MacBook Air? The former is highly portable and much lighter, but the latter would allow me to spend more time learning Elements during flight time. I may be overestimating how much free time I’ll have to use these things… 🥴🤷🏻‍♂️