FAQ for
Manos: The Hands of Fate (1966) More at IMDbPro »

After the master burns off Torgo's hand and he runs off (to what can be vaguely assumed as a death), Michael and his family are put under a spell so the Master can control them. Michael is chosen to take over for Torgo, while his wife and daughter are made into the Master's new wives.

The family was on vacation; note where Mike says to the policeman "running late, first vacation, kid getting tired" (as an apparent excuse for having a broken taillight). They are apparently vacationing at some place called the Valley Lodge.

No. The only one who commited suicide was John Reynolds (Torgo), and it was for reasons totally unrelated to the movie.

Yes, it is in the public domain and available to watch at archive.org. http://www.archive.org/details/Manos-TheHandsOfFate