Your boyfriend is from the countryside, so in fact, rural weddings have certain limitations to a great extent, or he has certain rules and traditions, so it is actually difficult to leave a beautiful feeling in his own eyes at this time. At this time, I think you can talk to your boyfriend about whether you can have a wedding in the city and a wedding in his hometown all your life.
I think your boyfriend also wants you to have a good wedding and be a happy and satisfied bride, so if he doesn't meet your needs in this respect, you may not have much hope for this wedding, so I think your boyfriend will respect all your choices.
Besides, I think if you want to talk to her about it, you must be modest or not too strong. Although it is a very important day, it is not as important as your boyfriend. So at this time, as long as you tell her carefully and tell her your true feelings, I don't think he will object to you.