You do need a decent internet connection, though. The outcome of a spin is set the instant you press the button, by the casino’s server. But if your connection drops in the middle of a bonus round, it’s irritating. My tip is to choose routes you know have stronger coverage, or use onboard Wi-Fi if it’s reliably offered. Also, selecting an online casino with a dedicated, well-made mobile app usually gives a better experience than just using a browser. And always do your app updates or log in while you’re still on a stable connection at home or the station.