We're a group of 5 all aged 18 planning a suprise birthday trip in mid May.
A) wondering how much we'll need to eat on a budget(cafes,pattiseries,take out)
B) if the metro/REM are reliable and will get us all around paris including to the airport and disneyland with a 3 day pass
C) how safe we will be as a young group
Any advice anybody has would be much appreciated,thankyou.