IPTV travels with your account, not with a physical box, so logging in on a hotel TV or a tablet during a family trip works the same way it does at home, provided the Wi-Fi you connect to actually supports it. Most of the real friction with travel streaming comes from the network you are on, not the app itself.
Check the connection before you check in content
Hotel and holiday-rental Wi-Fi varies enormously in quality, and some networks throttle video streaming or block certain ports entirely. Before assuming something is wrong with your subscription, run a basic speed test on the network you are connected to — a surprising number of "it doesn't work here" reports turn out to be the venue's Wi-Fi rather than anything on our end.
Mobile data as a backup, with limits in mind
If the Wi-Fi where you are staying is unreliable, a phone's mobile hotspot can work as a backup for a single device, but sustained video streaming uses data quickly, and most family mobile plans were not designed around hours of daily streaming on the road. Treat it as an occasional fallback rather than a full replacement for the trip's main connection.
Some networks need a VPN, some do not
Whether you need a VPN while travelling depends on the specific network and, in some cases, the country you are visiting, not on IPTV itself. See IPTV and VPNs explained for when a VPN actually helps versus when it just adds an unnecessary extra layer that can itself cause buffering.
What to set up before you leave
Confirm your login details work and test playback on the device you are bringing while still on your home network, so you know the account itself is fine before you are relying on an unfamiliar connection. A five-minute check at home avoids troubleshooting a working account on an unreliable network while everyone is waiting to watch something.