Inasmuch as we all would like to be off the grid while on vacation and leave behind the world with all its worries, it is nearly impossible to achieve unless we consciously decide to travel somewhere without a signal. Then, as long as there is a network, we should have have a choice to access it or not.
At Llantrissant, we have made sure that our connectivity is as good as it gets. We have six Google wifi points distributed throughout the house and property/ The network is private and is password protected. Even though we don’t have fiber optic service yet, the 45 mbps seems to be adequate for music and video streaming. Our son had no complaints about remoting in to a workstation during his last visit. It is also unlikely that you will incur roaming charges as long as you are connected to the wifi. However, toll-free numbers are usually not covered but Skype is a reasonably good alternative to paying roaming charges.