Trivia: Ross and Rachel get married in A Little White Chapel in Las Vegas. It is actually a real Vegas wedding chapel, and like the sign says, Joan Collins and Michael Jordan were both married there (though not to each other). Other notable marriages that took place there include Frank Sinatra & Mia Farrow and Paul Newman & Joanne Woodward.
Goof: It seems very odd that a woman, especially Rachel, wouldn't check herself in the mirror after sleeping on the plane. She wakes up, gets off the plane, goes through the hassle of the airport and undoubtedly takes a cab and arrives at Caesar's Palace and not once does she check herself or her makeup or go to the ladies room, or at least come across a mirror. It is more conceivable that she would realize something was wrong from the moment she gets off the plane and notices people staring, or a change in Ross's demeanor. Knowing Ross, he wouldn't have acted cool the entire time since he's the one who drew on her face.
Goof: When Chandler and Monica climb under the craps table to find the dice, it is on its edge. When the camera angle changes, the dice is laying flat.
Goof: Monica needed something new, old, blue and borrowed. She chose Chandler's condom and stealing a blue sweater. Why didn't she choose the condom, taking the blue sweater that Chandler was wearing since that morning, and buying the first cheap thing she could find?
Goof: When Ross tells Rachel to go the Men's Room, he points to the right. Rachel goes to the left, suggesting that the Women's Room is in the opposite direction, but behind Ross there is a sign indicating that all restrooms are to the left.
Goof: When Chandler is looking for Monica and finds her playing craps, he makes a sad face. After the shot cuts to Monica, the exact same clip of Chandler's sad face is used again.
Continuity: Chandler says that if he won $5,000 he would join a gym and build up his upper body. But we already know that he and Ross both have gym memberships, and not only don't work out, but can't even bring themselves to quit.
Trivia: When Joey rings Phoebe to find out his ATM pin number, she reminds him it is 5639. When using the letters that correspond to the numbers, it spells Joey.
Continuity: When Rachel is first trying to put eye drops in her eye, she is looking in a mirror that is on the wall to the left of the girls' bathroom door. It is also there in "The One with the Yeti" wherein Phoebe checks herself in it while wearing a fur coat. In all other episodes, however, there is a 3D relief there of a woman with a Great Dane. In all likelihood, the mirror was needed for these two scenes, but would prove to be a problem as a regular feature, since reflections would have to be dealt with.
Trivia: Chandler doesn't believe in ghosts.
Factual Error: When Chandler arrives back at Central Perk, he says Joey kicked him out of the cab on the George Washington Bridge. However the exterior shot shown was of the Manhattan Bridge, which runs over the East River in the opposite direction of Las Vegas.
Goof: When Rachel and Monica leave their apartment to go to the eye doctor, Rachel turns left instead of right while the door is closing.
Goof: When Joey kicks Chandler out of the cab on the bridge, the background doesn't slow down with the car or the audio track. In the next shot the cab and the background have stopped. Then when Joey takes off again, the background doesn't move even though the audio track is heard.
Goof: When Joey first arrives in the desert, there is a lot of equipment sitting out. When the director gets into his car to leave, the equipment is still sitting out. A minute later when Joey gets the balloons, all the equipment is gone and the vans are leaving.
Trivia: Rachel says that Monica "really is freakishly strong". This is mentioned in other episodes, such as "The One with the Cop".
Goof: In the first scene after the opening credits when Ross is saying goodbye to everyone, we are looking at Phoebe and hear the door opening. When the camera cuts to Ross, the door is closed and he opens it again.
Goof: When Rachel knocks the cereal box off the counter it moves between shots. When it first falls it is next to the kitchen counter. But when it is shown in the next shot, it has moved about a foot to the left and is now in front of the blue counter.
Factual Error: When Ross and Joey are playing catch, Ross is boring Joey with palaeontology stories. He says "...now when they found the remains of the Mesozoic Mastodon they discovered what appeared to be the remains of a Palaeozoic Amphibian in its jaws! How did it get there?" However, there were no Mastodons in the Mesozoic Era. The Mesozic lasted from 251 million years ago to 65 million years ago. The earliest Mastodons appeared only about 4 million years ago. Ross should have said "Cenozoic Mastodon."
Trivia: When Chandler visits Gary at his precinct, the blackboard behind Gary's desk has names written on it in blue chalk. All of the names are references to or characters from Stanley Kubrick films.