More to come, but here is a start.....
Firstly and most importantly - make sure you are very aware of pick pockets. Prague is famous for them and they are very good at spotting unaware tourists. Kids are also used in this endeavor, so just keep your eyes open and if at all possible don't use a wallet and any women carrying purses should carry a small one, always keep it zipped, and ensure that they have it clutched in their arms when in any crowds (especially public transportation or touristy areas).
At some point while you are in the Czech Republic, you should try some Becherovka, it's a schnapps made from herbs and spices and can serve as everything from a cold medicine, to a digestif, to a hangover cure, to a hangover cause.
Coda (
https://www.ariahotel.net/coda-en.html) and U Zlate Studne (
https://www.terasauzlatestudne.cz/en/) - Both are very good terrace restaurants in Mala Strana (Lesser Town) not far from Prague Castle. I have eaten at both and the food and service is impeccable, as are the views. If you can only have one dinner in Prague, have it at one of these two places.
U Prince Restaurant (
https://www.hoteluprince.com/terrace) - There is a menu on the webpage. This is a great outdoor terrace restaurant right on Old Town Square (Staroměstské náměstí), specializing in grilled foods. If the weather is bad, then the restaurant is god as well. It can get crowded and the meal can take a while if you have a large group.
U Vejvodu (
www.restauraceuvejvodu.cz/?page=home&lang=EN) - This is a great beer hall/restaurant right off of Old Town Square. It has traditional Czech beers and dishes. I highly recommend trying the goulash and smazeny syr (fried cheese). Both are amazing.
Grand Café Praha (
https://www.grandcafe.cz/) - This coffee shop is located right across from the Orloj Clock in Old Town Square and give you a great view of the characters as it is about the same height as they are. You can still hear all of the sounds as they generally open the windows when the clock is doing its thing.
All of these things are in addition to the tourist activities that will be in any guidebook - Jewish Area, Prague Castle, Charles Bridge, etc., but all of them are really more of a restaurant variety and you will pass by them on your sightseeing if you walk and be very close to them if you drive/take cabs. Also, I hate the Prague Post, but they are the English paper in town, so you might want to get a copy when you are there, or check on line. You won't have any problems finding folks who speak English though = the Czechs are very similar to the Dutch in that - and many other - regards.
Are y'all spending the night in Prague? If so, where? I think that you will be there on a Wednesday night - if you like soccer, there is a chance you could catch a Champions League match at Sparta Stadium on Letna - which is right around the corner from my old flat...
Also, if you need Munich ideas, let me know that as well.....