From personal experience, trying to hail multiple taxis for a large group is always risky and stressful. My family and I have had bad experiences with this, so now we reliably book transportation online. Try booking
holiday transfers Spain through GetTransfer. Here you can ask for a car of a definite size, for example, a large minivan or a small bus. Drivers set their own prices, and you can view their ratings and real photos of their vehicles to choose the most cost-effective option. The price will be given to you right away, no extra money for time spent in traffic or for luggage. Besides, if your flight gets delayed, you don't have to worry about it. Usually, you will give a flight number at the time of booking, and the drivers will monitor the landing time by themselves. Are you going to Málaga or even further along the coast, to Marbella?