Feb 11, 2017 - 9:40 AM
This forum is about Switzerland only, but in general I would say that convenience mostly depends on which town and accommodation you choose, and not so much on the country. With children I would pick one base town, not too far from Switzerland to limit traveling time. But still that could be in any of the countries Lucas mentioned. Many people visit Paris and then take a high speed train to Switzerland, but that may not be what you are looking for.
You can best buy your rail pass online, that saves you time on the border. Simply print the pass at home so you can continue traveling rather than getting off the train to wait for a ticket office and then wait for the next train. You'll find all options on the Price tab of the Swiss Travel Pass page Lucas gave you.
Last modified on Feb 11, 2017 - 9:42 AM by Arno