Seating

My FH cousin did this at her wedding. It was, ok. For everyone who isn't a VIP, it was harder to see since the tables need to have space in between them. It was a little awkward for people who's chair faced away from the front because they had to turn their chairs. I can see wanting to do this so that you don't have to tear down or set up anything if all of your stuff is in one place. That would be a big pro to doing this. I'm not in love with the idea, but it didn't totally suck

With that many people I sincerely suggest at least assigning tables. I went to a larger wedding with no seating arrangement once and it was chaos trying to find a table where myself and those I wanted to sit with had enough space. It does not take that long to assign tables and makes everything run smoother, especially if you want your guests to sit at the tables for your ceremony.

I'd definitely recommend assigning tables. As someone who's been to a wedding where I only really knew the bridal party, it's super awkward to end up at a table by yourself because there's not assigned seating and you don't know anyone/assume other people will come sit at your table. I think tables for the ceremony could be ok if it's a short ceremony, but it'd be a little more comfortable for your guests if you could flip the space - have tables at the back/sides and just rows of chairs for the ceremony, have everyone get up from their seats for a cocktail hour, and rearrange into tables with chairs for the reception.

Assigned tables for sure. I would say it's very different and a little awkward to be sitting at a table during a ceremony, but do what you have to do girl! TBH if I was a guest I'd rather take my chair to the ceremony space!