I may have the wrong expectation for Last Vegas (Blu-ray release 2014-1-28).  I find its comedy to be subpar, especially if compared to The Hangover (2009).  If it is meant to be a drama about the elderly, I don’t think it’s successful in this respect either.  The story cannot be taken seriously, yet the things happened in the story are too safe.  If it is meant to be a feature-length advertisement for Las Vegas or the hotel in the movie, then perhaps it is more successful.