Sharing your eSIM as a hotspot
Yes, you can. Every SimWay plan allows tethering, so the laptop, the tablet and the person you are travelling with can all use the same connection.
Turning it on
It is your phone’s ordinary hotspot feature — nothing about it is specific to an eSIM. On iPhone: Settings › Personal Hotspot, and switch on Allow Others to Join. On Android: Settings › Network & internet › Hotspot & tethering › Wi-Fi hotspot. Set a password you can actually dictate to someone across a table. One thing to check first: if your phone holds two lines, make sure mobile data is pointed at the travel eSIM before you share, or you will be tethering your home SIM at roaming rates.
It comes out of the same allowance
There is no separate tethering pot and no extra charge — but everything the other device does is spent from your plan, and a laptop is far hungrier than a phone. A machine that has been offline for a week will pick the moment it connects to download system updates, sync a cloud drive and refresh every open tab. Before you share, it is worth turning off automatic updates on the laptop, or at least setting the connection as metered so the operating system holds back.
Mark the connection as metered
This single setting saves more data than any other habit. On Windows: Settings › Network & internet › Wi-Fi › your network › Metered connection. On macOS: System Settings › Network › your Wi-Fi › Details › Low Data Mode. Both tell the operating system to postpone updates and large background transfers until a cheaper connection appears, which is exactly the behaviour you want on a plan you paid for by the gigabyte.
Battery is the real limit
Tethering runs the phone’s Wi-Fi radio and its mobile radio at full tilt simultaneously, and it heats the handset. A phone that lasts a day normally will not last an afternoon as a hotspot. If you are working from it for any length of time, keep it plugged in — and expect the phone to throttle its own charging speed once it gets warm, which is normal rather than a fault.
Sharing with someone else
Perfectly fine, and often the cheaper way to travel as a pair: one larger plan shared beats two small ones on most destinations, because the per-gigabyte price falls as plans get bigger. Agree beforehand on what the connection is for. Two people navigating and messaging on a 10 GB plan is comfortable; one of them streaming video in the evenings is a different plan entirely.