This was our first helicopter experience and it was probably the highlight of our trip. I got the groupon for the tour of The Strip and I thought everything went really smoothly. From booking to the end of the tour, I had no issues and everyone was really friendly and professional.
Like others have said, pay the $40 extra to get the doors off. I can't imagine enjoying the ride half as much with the doors on. Plus, the pilot said it would've been really hot (for context, this was at night in late June, with temps around 100). If you get the doors off, know that it can get really windy. So girls, pull your hair back (they had hair ties). Even still, our hair was a bit tangly afterwards. Also, they sell plastic lanyard pouches for $3 to put your phone in. These go around your neck to keep your phone from, you know, flying out of the helicopter and possibly killing someone down on the ground. I said "sold" when they told me that little tidbit. If you get these, which I suggest you do, you'll want to make sure to keep the plastic as flat as possible when taking videos and pictures. I have a bunch of photos that have some glare on them from the plastic.
The extras do add up but don't they always (the $40 doors off, the airport fee, the lanyards, tipping the pilot). Plus it's about a $30 cab ride each way from The Strip. I checked around to compare prices with other companies and it seems like they're pretty much on par when you factor in all the different costs. However, I didn't find any other places that offer the doors off option (they're probably out there, though). In the end, I was really happy with this tour and wouldn't hesitate to book a Red Rock tour on my next trip to Vegas!