I previously used public wifi often when we traveled frequently, both by motorhome and otherwise. I never had any hacking problems, which can happen, though, if you're not careful. This article, from the Kaspersky AV blog, has some good tips on safe practices when you're on a public wifi network.

We have breakfast at Denny's occasionally, and I'll take my iPad, and I will use their public wifi to read the news. But I'll never purchase something and use a credit card, or log in to our bank, when on public wifi. Use caution.

Jim Hamm