Sure, here are some travel tips for visiting Málaga, Nerja, and Almuñécar:

Best Time to Visit:
The best time to visit these Andalusian cities is during spring (April to June) and autumn (September and October). The weather during these times is moderate and ideal for sightseeing.

Route and Accessibility:
All three cities are conveniently connected by road. You can reach Nerja and Almuñécar from Málaga by car or bus in a couple of hours. If you prefer rail, there is a rail service to Málaga from major Spanish cities.

Altitude and Acclimatization:
The towns are at sea level, so you won't need any special acclimatization.

Accommodation and Booking:
There is a wide range of hotels, from luxury to budget, in all three cities. Booking in advance would be wise to secure the best possible rate and availability.

Clothing and Essentials:
Given the coastal and sunny Mediterranean climate, don't forget your sunscreen, sunglasses, and hats, along with your comfortable walking shoes. Pack a good mix of light clothing and a few warmer items for evenings, as it gets cooler.

Health and Safety:
It's generally safe to travel around these cities. But as with any travel, it is recommended to be cautious about personal belongings and observe any local advisories.

Local Etiquette and Respect:
The Spanish are known for their friendly and relaxed lifestyle. Respect the local culture and customs. A simple "Hola" (Hello) or "Gracias" (Thank You) can make your interaction with the locals much friendlier. Enjoy your time at local tapas bars, but remember to not leave your rubbish on the tables - the locals consider it disrespectful.

Learn a few Spanish phrases, this can enhance your travel experience and help you bond with locals.