You won't get any hassle for a short stay in Europe. Though if you do this repeatedly you willl wish to spend the night, and drinkt in the atmosphere.
Only on my first MR, which was a turnaround and then backj to Canada, did I get the third degree.
The agent was most polite as he searched all of my belongings. I told the truth, about doing a MR for status. The customs agent smiled and said others were doing the same. No problem at all if you tell the truth, it always works.