I put in 71sqm eva-last composite decking end of Feb. surrounding our pool and its existing paving.
It does get hot in the sun yes, we are at the top of a hill and get full northern facing sun all day. Umbrella is all you need. Not any hotter than a tar road / darker paving gets anyway.
It can get scratched, so don't go dragging heavy furniture with sharp feet all over it.. not much you can do but replace a plank but honestly it's not terribly noticeable. Unfortunately the wind took our umbrella and its 50KG foot for a drag and it scraped... but it's not major.
To be safer I'm getting one of those outdoor grass carpet's for the table and chairs.