Are you an online junky :-)?
If you cannot survive outdoor life and camping or glamping without connectivity, than this selection of campings is your favorite. All campings below have been checked for their Internet connectivity. Please note that there is so much variation in quality, price and speed. Most campings offer wifi at their central reception of restaurant area. Better is hot spots all over the camping area. The services are sometimes free of charge, of free for low speed usage. Or paid. Please check the specifics per camping.
Also note that during peak season, the connections are normally pushed to their limits and sometimes results into slow connection. In the shoulder season, this is not so common but when the camping is full, also the internet connection is "full".