Hi Margaret 
The provisional itinerary is as follows: 
Day 2 - Mijas/fuengirola 
Day 3 - Ronda 
Day 4 - Alhambra (optional) 
Day 5 - Frigliana / Nerja 
Day 6 - Gibraltar (optional) 
Day 7 - Free day 
So it looks like Day 7 will be your best bet or day 6 if you don't want to see Gibraltar - but please bear in mind this is subject to change at the tour manager's discretion. 
Kind regards, 
Olly, your editor