Hey guys! I really need some help.
So, my Sister-in-law has offered her backyard to us for our wedding. Their backyard is a nice size for a small, intimate wedding but I am having second thoughts about having it in her backyard.
A little back story why she offered her backyard... Originally, I've always wanted my wedding in my grandma's backyard because it is very large and the landscape is beautiful. Also, she has tree around her property that helps drowned out the noise. However, my grandmother can be a control freak and has good days and bad. Being that type of person, not many people like to be around my grandma.. Of course people will put aside their differences for a wedding but it still worries me.. Anyways my sister-in-law, who I should mention is a bridesmaid, offered her backyard to us Pre-COVID19 because they just moved in a new home with a nice backyard.. unfortunately I said yes before seeing her backyard layout and now that we are dealing with COVID I'm worried that it may be too small and I want my guest to feel comfortable and have the ability to spread out and practice social distancing.
Long story short, I want to go back to my original plan of having it in my grandma's backyard but I don't want to hurt my Sister-in-law's feelings and I don't want any tension.. Honestly I'm probably over thinking all of this and I just don't want to seem like a flake or that I can't make up my mind.. I should mention I'm not a confrontational person at all and I'm a huge people pleaser who tends to get walked all over so that's why I'm having this issue.. If anyone has any advise or could give me their perspective on this that would be great, thank you so much for your time 
