Celine Dion has made good on her promise to reward superfan Richard Dunn with a once-in-a-lifetime Las Vegas experience by inviting him to spend America's Independence Day with her.

Dunn has become known as Lonely Airport Guy after he found himself stranded and alone in Sin City recently.

Bored and frustrated, he shot cellphone footage of himself wandering around the deserted airport miming to Dion's rendition of break-up ballad All By Myself.

Amused by the online video, Dion offered Dunn tickets to her show - and the use of her private bathroom in a message she posted last week (ends13Jun14) - and now she has invited the Internet sensation to join her on 4 July (14).

Sources tell Tmz.com he'll be in the audience for her concert at Caesar's Palace and Dion has agreed to put him and a guest up at the hotel. She is also planning to meet Dunn before she hits the stage.