Sonia,
To be honest and this is my opinion...
..... a gyros must be seen to come , sliced in situ, when you order it.
I was at Beach Kostas , this afternoon, but a tad early as they don't open till 3pm. However they loaded the gyros for me and a very large portion sat in the passenger seat of the Punto for return to Kavadaddes.
But there was less in the box when I got home as I had to stop a few times!!!
Our tea tonight. - Sadly, with staff problems , they will be closed Thu/Fri but if they are open on Sat then pop in early and see what they can do.
Cheers
Negg