Kent (UK), Belgium, Germany, Austria, Hungary and Romania.
Yes.
Romania was allied with UK, France, Italy, Russia etc.
any food you want
Not a different government; Romania is now - but only theoretically - an independent and democratic country.
You need a passport or an ID.
The difference is two hours.
I recommend to use Skype.
Yes, it is possible.
No different directions for Romania and Bulgaria after 1990.
No, Romania and Russia are different now.
Not necessary for United Kingdom citizens.