Watch Hotel Transylvania 3: Summer Vacation (2018) HD Full Movie Free on SolarMovie. Watch Hotel Transylvania 3: Summer Vacation (2018) online free. Count Dracula and company participate in a cruise for sea-loving monsters, unaware that their boat i...Count Dracula and company participate in a cruise for sea-loving monsters, unaware that their boat is being commandeered by the monster-hating Van Helsing family.