We’ve seen plenty on the network through the years, but the most anticipated one right now has got to be the upcoming Summer House and Below Deck Mediterranean crossover. When does the Summer House and Below Deck crossover come out? It’s unclear whether KJ Dillard, who’s set to return for Summer House season 11, will be part of the excursion since he isn’t pictured. Where are they sailing in the Summer House and Below Deck Med crossover? “The Summer House gang is on the boat right now in Greece,” he said at the time.