Honestly those adorama prices change like every hour during black friday week its super stressful... if you are shooting your sisters wedding you gotta be really careful about what you pick because there is no redo for that day. Since you have 2000 bucks i would suggest looking at the Canon EOS R6 Mark II Mirrorless Camera Body. Its basically the gold standard for weddings right now because it has dual card slots. If one memory card fails you still have the photos on the other one which is a huge lifesaver. The downside is that its pricey so it might eat up your whole budget before you even get a lens. Another option is the Canon EOS R8 Full-Frame Mirrorless Camera Body. Its way cheaper and uses the same sensor so the pictures look identical but i would be nervous using it for a wedding. It only has one card slot and the battery is pretty tiny so you would need to buy like four extras to make it through the ceremony. Those bundles you see sometimes throw in cheap tripods or slow sd cards that arent actually worth anything so just watch out for that. I always check the actual sold by list to make sure its not a third party seller too. I'd probably go with the R6 II if you can find a deal that leaves enough for a basic lens just for that peace of mind... its better to be safe than sorry when it comes to family memories.