When Chuck is hanging from the gondola, his hand position keeps changing between shots.
(at around 14 mins) Greta cuts off Jeff's tie with a knife, leaving only a very short piece of it on Jeff. In the next shot this piece is much longer.
Rob Riggle's Jim Rye mispronounces Richard Chamberlain's character's name as Aldebert DeSmet, rather than Adelbert.
The village of Gstaad can be accessed by car, there's no need to use the cable car, which is only used by skiers to go on the tracks.
Gstaad Airport is mentioned, however there is no airport in this small ski resort. In fact, there are only three airports in Switzerland : Zurich, Geneva and Basel.