Advice re awning pegs and breathable groundsheet

Hi,

As our two grandchildren are now coming away with us we've just bought a Sunncamp Mira 390, with annex and inner tent, which we put up for the fisrt time at Easter.  Apart from the roof tension poles appearing to be a bit thin, and there not being any monsoon poles, we were very pleased with the awning.  However, I would like advice re what pegs to buy, both for grass and hardstandings.  I suffer from a bad back and do not fancy crawling round on my hands and knees bashing in pegs with a lump hammer.  I would much prefer to use my cordless drill and hopefully do the job quicker and easier?  Is it really as easy as the adverts claim?  Also, we are undecided on whether to buy a breathable ground sheet or interlocking floor tiles?  The tiles seem to be a bit bulky so we are leaning towards a groundsheet.  Any advice, especially recommended makes, would be appreciated.  Lastly, any advice or tips re awnings and equipment would be most welcome.  Thanks in anticipation.