Buddhists are so diverse that there isn't one simple answer, there are of course ordained monks and nuns in Buddhism that have very regulated daily routines, lay Buddhists may live lives that might appear to be more 'normal'. In Buddhism there is a movement to understanding and working with the mind; this gives the opportunity to experience the Buddhist path in almost every part of the human condition. If you are thinking of a specific kind of Buddhist, a monk or nun for example I could offer some more information.
Buddhists do not go to mass. Only Christians and Catholics do.
To pay their respect to the deceased.
3 days from the full moon in April
All over the globe. There are Buddhists in almost every country.
People.
There is no mourning time for Buddhists, but soem may offer rpayers for 49 days after the persons death, but it is generally well wishings for a better rebirth or to a Buddha's PureLand.
That depends on the region. For example, the Tibetan Buddhists wear orange and yellow. Just go to images.google.com and search for "buddhist monk" ;)
People who believe in Buddha are commonly called Buddhists. They practice Buddhism
For lay Buddhists, like myself, I wear normal everyday clothes. Buddhists Monks and Nuns wear robes that are traditional to the lineage they belong to.
Like Buddhism in general, Zen Buddhists worship no god(s) Non-Buddhists often mistakenly believe that Buddhists worship The Buddha. He is, however, just a man. His "claim to fame" is that he worked out the path to decreasing pain through the control of desire on his own, without instruction or guidance. He is revered for this, but not worshipped
The principal festival of the Buddhists is the Vesak Full Moon Poya day. The birth of prince Siddhartha, the enlightenment of Bodhisatva and the Pass Away of Lord Buddha were occured in such days. Meanwhile, Buddhists celebrate all Full Moon Poya Days to celebrate various important events in the history of Buddhism.
No. Buddhists do not worship, period.