Why do sims 2 gamers prefer on building wedding lots on community lots than residential lots?

i was looking for a wedding lot to download because the residential wedding lot that i created occurred an error, it was a big mistake for inviting the couples over and using "make selectable" & then inviting their relatives to come over for the wedding party, when i could have simply move either one of the couple in that lot by joining the household, then simply invite their husband/ wife to be, then propose to him/her to move into that lot. as i have said a while ago, it occurred an error so i have no choice to delete it. im seeking for a residential wedding lot, but all i could find is a community wedding lot. i don't like community wedding lot because it will turn really chaotic if an uninvited guest appear, i want my sims wedding to be a private celebration with friends and relatives only. by using residential wedding lot, it saves up the hle time of loading time of going back and forth changing the lot zoning.