Hi Niparungta -
<<"I have checked online and from my understanding the Jungfraujoch railway and cable car will be operational at end of May dates . Which route to Jungfrau should be taken? It is very confusing to decide. Should it be pre planned or we can decide on that day.">>
The cograil will be running. I do not know which cable car you refer to.
Please look at the panoramic map of the Jungfrau region which I linked to in my last post.
You will see that there is only one route to the Jungfraujoch from Kleine Scheidesgg (via cograil) unless you change your mind about your interests and decide to climb high alps with technical gear. ;-) You will see that there are a few routes to Kleine Scheidegg. At that time of year, the only reliable routes are via cog rail from either Grindelwald , or from Lauterbrunnen, via Wengen. Once you are there near the Jungfrau, the other routes may open up if there is good weather. They'll require hiking ;-(
Your hotel will guide you as noted above in my last post to you, but make your plans to go up based on the most recent reports.
<<"I have heard a lot about Zermatt . Is a day trip from Brienz possible .">>
Yes. What have you heard about it that makes it more attractive than the Jungfrau region?
<<"You have mentioned Wengen region.Can I get some clarity about it.">>
Yes. Wengen is a town in the Jungfrau Region.
Please look at the panoramic map that I linked you to in my last post. if you prefer a planimetric map, as opposed to a panoramic map, try:
<<"Another query is regarding currency.Can we carry US dollars and exchange it locally">>
Yes. Almost all train stations have currency exchange. Banks will do it, too. In major city train stations (such as Bern, Zürich) which likely includes Interlaken, there are dedicated Foreign Exchange booths. The rates are good. ATM's are probably more consistently reliable for the best immediately current rates. US dollars are often accepted at hotels and restaurants, , but the exchange rate will depend on the mood of the host. ;-)
Euros are more common, bu the same caution applies.
However the most economical and safest way to get funds and to crary them is to take them in small amounts from an ATM which withdraws them from your bank at home.
If you are using a US bank, it may offer overseas ATM service.
<<"I am very happy to meet such good people in the Forum .">>
Thank you. We are glad to have such thoughtful travelers as yourself, who plan ahead and try to understand the systems.