Doin' Time on Planet Earth (1988)

Eccentric teen, Ryan Richmond lives with his family in a hotel they own in Arizona. He spends his days at school with his best friend, Dan. Stuck without a date for his brother's wedding, Ryan goes to a computer dating service. He's told he might be an alien stuck on Earth along with thousands of others. Soon, an oddball couple - the Pinskys arrive and tell Ryan he's an alien prince meant to lead his brethren home. That's when things get weird...