The airport branch of Thrifty in Palma de Mallorca offers a selection of extras that you can book at reasonable extra fees. This includes nominating a second driver if you want to share the load. You can also get sat nav units, which are particularly useful here if you're going to take a road trip or two. You can also hire child seats – Mallorca's laws require that children up to two travel in rear-facing children's car seats. Normal booster or child seats are required for anyone under 12.