Yes umbrellas are useful for keeping the rain or snow off the people or objects under it. Umbrellas can also be used to block the wind or can be used as a parasol to keep the sun off you.
Ireland gets a lot of rain so an umbrella is very useful. There is no problem in finding places that sell umbrellas in Ireland, so if you don't bring one, you will easily get one.
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Yes wholesale umbrellas can be a very good type of umbrellas to use. Generally the price is less expensive as an added positive factor to use in your decision making process.
Offset umbrellas are very practical, but are pricier than regular umbrellas, offset are practical as they shade you from the sun and the cold wind of the night.
Patio umbrellas serve two purposes. One purpose is to provide shade from the sun on sunny days. The second purpose is to provide shelter from rain on rainy days.
Because they are very, very smart, and know that umbrellas are actually of better use than parachutes because of their high ratio of balance.
This website, http://www.patioumbrellausa.com/Commercial-Patio-Umbrellas-s/29.htm, was made for restaurants, hotels, and other businesses to purchase patio umbrellas. It has a very large sellection.
Yes, automatic umbrellas are sold at Walmart, and are in fact very cheap if you buy them there. You should be able to get a few for under ten dollars.
No they don't have umbrellas.
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You may find discount patio umbrellas on various stores online including sears, canadian tire, IKEA, target etc. Some websites are also useful including: http://www.mjjsales.com/?gclid=CMOpm8-Nva8CFckbQgod0R35zQ http://www.overstock.com/Home-Garden/Patio-Umbrellas-Shades/3631/cat.html