I've done it at a bunch of concerts and just recently while I went camping. It's such an amazing feeling. I suggest taking the mushrooms and just after your peak (about 2 hours in) take the E so you can feel the peak of that too. One time i did both and I peaked on both at the same time. It was powerful and one of the best feelings ever, but I have learned it actually ends up a better experience when I space it out.
which is fine, its not that big of deal as everyone says. ive gone plenty of times without taking a sip of water and i felt great.
ahh, the hippyflip. very colorful, crazy, and confusing. a thick fog rolled into the room, and everything was behind a layer of patterns and colors. they swirled about, became fish, feathers, leaves. paisley patterns and scorpion tails.. i put on some lightshow glasses and was sucked into a land of pure color and shape. crazyness...