We have it, best thing we ever did. Nothing like laying out a blanket which will not get mud on it and listening to some poor bastard mow their lawn
in summer.
We have 2 boys and you could see the tracks on the real grass where they walked down the garden to the house, and where they played football.
The fake grass is easy to maintain, brush the leaves off it, water it with weed killer every 3 months. Err, that is it.
I have cleaned fox poo off it, it was incredibly easy compared to real grass.
The benefits to us are it dries incredibly quickly as it was professionally laid with hardcore underneath, both Dh and I have hayfever and if we mow the lawn or go outside after the gardener cut the grass Dh would have slits for eyes, have to stick an electric thing up his nostrils to help him breathe and put eye drops in his eyes.
He can now actually enjoy the garden. Be outside with us and eat out there too. We have a patio area which the BBQ sits on so no melting the grass.
The slight negative is yes it is warm in hot weather but the pros massively outweigh the cons. Slipping a pair of flip flops on is hardly taxing.