Ethel, you can't put anything hot on it - I used chopping boards but the worktop savers you have now would be just the job. I didn't have a cooker in that flat, so no hot pans to worry about ;o)
It was fine with the cleaners as long as you didn't use anything abraisive - I went for a pale grey marble effect anyway, so it wouldn't be too noticeable if it did fade - if you went for wood effect or something, you may see the white plastic start to show through I guess.
It was not too difficult to apply - you needed to have the worktop pristinely clean and then wet it slightly and float the fablon on the top and then sqeeze the water ot to one side - I used a window cleaning blade - you can pop any bubbles with a fine needle and smooth out after it has stuck properly.