Most people rent them for events going on. Unless you have the storage, there is no use to purchase one. If you live in an apartment, there would be no room to store it. Many people rent party tents because of storage issues. This would depend on budget also.
The durability is great when using party tents. They withstand wind and rain. People can stay comfortable in these. During hot seasons, they keep the sun out. They not only hold people, they hold possessions. If your things need to stay dry from rain, these are great options. People can stay inside without noticing the weather outside (except what they hear, of course). People can stay warm in them, even if it is chilly outside. Mild winds will not blow them because of their durability.
You can ask yourself before hand exactly what you want in them. The question of whether you want tables with linen cloths inside is one that does indeed come up. If they are being used for parties, tables could be inside. The company you are working with should know the size you will need. Al you need to do is tell them how many people will need to fit in.
These party tents are not only used for partying, they are used for rescue. Oftentimes, natural disasters arise and houses are destroyed and force people to leave. Many people have no where to go. Where can they put their personal possessions? These tents have been used by many individuals for safety.