Last week, Mark jetted off to the Nevada strip with 38 family and friends to celebrate his upcoming wedding to former Corrie star Michelle Keegan.
And after a fun few days of non-stop partying, the Essex boy is now bidding Vegas goodbye as he heads back home.
Taking to Instagram earlier today, Mark told fans just how much fun he has been having across the pond.
Sharing a photo of himself wearing a crown while enjoying one of Vegas' famous pool parties, he said: "It's time to say goodbye!! Vegas a place that has brought nothing but laughter & joy to the week of my life !! Until next time!! #emosh #stag #timeofmylife."
Since his arrival in Sin City almost a week ago, Mark has been keeping fans updated with his stag do shenanigans.
On his first night in Vegas, Mark revealed his best man and younger brother Josh had gone all out to welcome him and his stag party. As well as organising for girls to hold up placards of his name Wrighty, Josh had 'Congratulations Mark' displayed on a big screen inside the venue.
Sharing a photo of his brother's efforts, Mark said: "When you walk into one of Las Vegas best clubs as this happens!! You know you have a good best man. @Joshwright4 xx."
The former TOWIE star was spotted rubbing shoulders with DJ Calvin Harris too!
Despite being away with his close pals - including TOWIE stars James Arg Argent and Elliott Wright - it seems Mark still had his wife-to-be Michelle on his mind.
Michelle revealed Mark had been sending her updates from his stag do via his dad. She said: "His dad and his mates have been sending me pictures! The one I got this morning is of him holding a picture of my face with a sign behind it saying Mr Keegan, which is hilarious!"
And it seems Mark has also been checking up on his fiancée while he's been away.
After seeing pictures of Michelle looking oh-so-gorgeous on the BAFTA red carpet, he tweeted: "Soooo soon until this beautiful, classy, down to earth incredible little human will be my wife forever !! Its a dream."
The couple are thought to be getting married in the UK, hosting 200 guests for their nuptials, and Mark has hinted his and Michelle's wedding is oh-so-soon.
On Saturday, he tweeted: "Being out in vegas is one thing, but to keep me buzzing and smiling is knowing that in 2 weeks I'm marrying the girl of my DREAMS."
Has he just given away his and Michelle's wedding date?!
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Take a look at Mark and Michelle's romance: