Short answers, pulled from the story.
Help! had its Royal World Premiere at the London Pavilion Theatre in the West End of London on the 29th of July 1965, in the presence of Princess Margaret, Countess of Snowdon and the Earl of Snowdon.
Ringo Starr proposed Eight Arms to Hold You, which was announced as the official title in mid-March 1965 and appeared on the cover of the "Ticket to Ride" single. The title was changed to Help! in April 1965 after neither Lennon nor McCartney could write a satisfactory title song around the original name.
Help! was filmed in London, Salisbury Plain, Twickenham Film Studios, the Austrian Alps village of Obertauern, and New Providence Island and Paradise Island in the Bahamas. Shooting began in the Bahamas on the 23rd of February 1965 and finished on the 14th of April at Ailsa Avenue in Twickenham.
In 1970, Lennon said the Beatles felt like extras in their own film, stating "The film was out of our control" and that director Richard Lester never explained what it was about. Ten years later he reflected that the cast were smoking marijuana for breakfast throughout the production and that "nobody could communicate with us."
Help!'s pop art style influenced the 1966-68 Batman TV series and the contemporary advertising industry. Ronnie D. Lankford of AllMovie described Help! as a forerunner to music videos, and critics have noted Lester's visual style was later adopted by Bob Rafelson for The Monkees television series and continued to influence productions including 1998's Spice World.
Help! holds an 86% approval rating on Rotten Tomatoes based on 28 reviews, with an average rating of 7.2 out of 10. The critical consensus describes the Beatles as displaying "infectious charm and humor in an enjoyably madcap adventure."