We like Guerin. We also often use economycarrentals.com due to cheap rates and 'free' no excess insu

My boyfriend and I are planning on driving from Lisbon to the Algarve in early October for about 5 days. I wanted to know what towns are a-must-see and if anyone had any reccomendations for car rentals. Are there any companies that have pick ups that aren't at the airport? Or should we just head over to the airport for a car? We are New York drivers. Are there any tips we might need for driving in Portugal? This will be our first time in the country.
As far as renting a car, I recommend discount hotels in las vegas you check with Auto Europe discount hotels in las vegas before you head out. They should have the best deals. You do need to be of the tolls roads (electronic tolls) you will encounter on the drive ( www.viaverde.pt ).
I've found the cheapest fully inclusive rates to be with holidayautos into Portugal, and there's no real difference in price whether at the airport or a downtown office (as it inlcudes any potential location surcharges already)
We like Guerin. We also often use economycarrentals.com due to cheap rates and 'free' no excess insurance which I consider mandatory in PT. You can pick up a car in the city. Rent a diesel as gas prices in PT are high, and try to buy gas in town, not on the highway.
For 5 days in the Algarve, I would recommend Lagos, Sagres, Silves and Tavira. Take a bag with a swimsuit and towel and stop along the beaches on the way. Take the N125 and you will see plenty of signs. Silves is inland, about 5 miles or so.
The toll road down to the Algarve is not an electronic one. It is traditional with tickets. The A22 in the Algarve is one of the newer ones where you need a transponder...or pay at a post office. If you stay on the N125, it isn't an issue and at time of year, traffic won't be bad.