Budapest-Prague-Slovakia Drive


Me and three other friends are planning a drive trip starting from Budapest - Bratislava - Prague - Ruzemberock - Budapest (from 23 oct to 29 oct). We will be renting the can from Enterprise budapest and then return on the same place.

Can anyone advise about the things to take care while driving in these countries? Like am I allowed to drive the rented car from Budapest to Prague and slovakia? Do i need to take separate insurance for different countries? Or is one single insurance taken from budapest is fine? Also how about any toll stickers to be put on the car? How do i pay for the road tolls? Also is it safe to travel in car? About safety of the car while parking? Any other suggestions are also welcome.I have driven in Austria last year and found that to be easy and hassle free.

Thanks in advance