Hiring or borrowing is of course a great choice for reusing and saving resources.
There a many companies that offer an endless supply of products to hire for weddings and special events, e.g. furniture, decorations, a marquee and so on.
It is quite standard for the groom and groomsmen to hire suits - just as you can hire a bridal gown.
For more natural wedding advice visit our green wedding ideas & green events blog.