Hi, if you have chosen the flexi option, you get an Interrail Global Pass 7 days in 1 month. 

yes you have to pay the reservations in Interrail. 

For questions about #DiscoverEU please ask directly the DiscoverEU Team via Email or Facebook Group. 

Ask here for questions about trains, reservations.

1.you can often avid them by using other, local slower trains, esp. for trips over border

2.in some countries the RES is free (Poland, GB) or cost very little (less as 2€)

3.the very worst for this and pay extra-as we tell here daily many times; #1 ESpana, then #2 FRance-esp. also for the TGV-lookalike trains that go over the border to FRance

What type pf pass do you have? The flexi pass or the fixed travel option?

Here you can find answers to questions related to DiscoverEU.

https://europa.eu/youth/discovereu/faq_en