Welcome to the forum, believeinyou.
Don't get too scared by our posts. Most of us only post when we have a problem. A lot of the replies though, are really positive. If you need the surgery, then there's not much to do but get it. I was terrified before my surgery, really happy after I got it. We're not doctors, so you're reading our personal experiences.
Some people take a long time to recover after the surgery and some only days or weeks. I was one of the long timers, but I had a huge hiatal hernia.
There should be information on just about everything in the locked threads at the top of this forum. You can also put some keywords in the search box at the top of the page. One of the diets is at
http://www.pdfpedia.com/download/396/diet-after-nissen-fundoplication-surgery-pdf.html Ask your doctor. You'll probably get a printed diet when you go home. I wanted to know beforehand so I could stock up on food in advance because I wouldn't be driving to the grocery store for a while.
I spent a couple of nights with some pillows on my couch. I had no reflux. I had none of the symptoms of my hernia. I was just uncomfortable in general. Your doctor will prescribe pain medications just before you go home. I couldn't swallow pills so I got liquids, but I couldn't swallow pills well before the surgery. Most people are OK with pills. You might want to get a pill crusher beforehand - but ask your doctor(s) about crushing your meds!
Spend some time reading. It relieved my anxiety to know exactly what was going on and finding that most people feel way better afterwards.
Best wishes, and keep posting your questions.