does this tent come sealed up or a do-it-yourselfer

If you're referring to seam-sealing, then yes, it does come sealed. The fly is totally waterproof right out of the bag, and even though the tent does not have a bathtub floor, the fly fits so well that none of the water hits the tent anyway. I highly recommend getting the footprint too, it makes setup a lot easier and only weighs another 13 ounces, and that's waterproof as well.
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