What is the difference between acrylic, gel, and regular nails at a nail salon?

Anonymous
So I have a formal event coming up, and want to get my nails done. Haven't done that before. Always just did my own nails at home. But I figured, since this is a very fancy event, why not get a manicure?
What is the difference between acrylic, gel and regular? I hear acrylic hurts your nails, but is it really THAT detrimental?
I have naturally really hard, thick nails. So I don't want to ruin them. But I also don't want my polish to chip. They grow kind of slow though, so they're a little under finger tip length.
Also, is it true people at nail salons try to steal from you, since you can't use your hands since your nails are wet? I've heard stories about credit cards, cash, phones, etc being stolen.

What is the difference between acrylic, gel, and regular nails at a nail salon?
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