Everything is centered around this wedding thing

Ok what exactly is a wedding? Monika is acting so weird and unusual. Bob is also acting a bit off lately and it all has to do with this wedding thing. Last night they were looking at wedding cake servers and knives. Then tonight Monika informs Bob that she went looking at wedding gowns on Davids Bridal web site. What I really wish to know is if we felines will have to be included for I would rather not be. I mean I happen to like being able to lazy around all day knowing food and water are there when ever I seek it. Monika has not been sleeping right either lately. Someone please explain this wedding thing so I can understand what all this hupla is about.