And for some it's quite the experience.
Jedward joined the Celebrity Big Brother 2017 house in last night's live show.
The pair were a 'shock' addition to the line up, even if we did all know they were going in...
On entering the house, Jedward told host Emma Willis they hadn't been watching the show in order to go in "fresh".
The duo surprised the current housemates as they burst into a stage in the garden for a live singalong.
As Jedward settled in, some of the other celebs had a chat about dealing with the new arrivals.
Jasmine Waltz found it "mentally exhausting" just talking to them.
"I need a little mental break," she declared.
Heidi claimed they could struggle on this year's show.
"I think this house is already a lot less fun than their house so it's going to be a different adjustment," she suggested. "They had a nice cast, everyone got along... there's already friction here."
Ans Spencer agreed: "The people here aren't down with all that, people here are like shut up."
Celebrity Big Brother continues nightly on Channel 5.