How much data do you need for travel?
The right question is not “how big is the plan” but “how much do I use per day”. Maps and messaging sip data; video, stories and video calls eat it. Estimate by your own habits.
A rough daily guide
Light use (maps, WhatsApp, email) runs a few hundred MB a day. Medium use (browsing, social) around 0.5–1 GB. Heavy use (video, stories, calls) 1.5 GB or more. Hotel Wi‑Fi at night lowers your mobile use.
Estimate by trip length
Multiply your daily estimate by the number of days and round up — spare data is better than running out mid‑trip. Since the eSIM does not vanish, you can start smaller and top up.