Hello - My family of six (which includes 4 young adults) is planning a one week trip for the week after Christmas. This is our first trip to Portugal, and we know we won't be able to see everything. I would appreciate any suggestions as to what area(s) we should concentrate on for this first trip during this time of year We most likely will be flying in and out of Lisbon, and will rent a car. Should we stick to Lisbon and north - Sintra/Obidas/Alcobaco/Coimbra and maybe Porto, or should we travel south to the Algarve after Lisbon/Sintra. We are interested in sights, architecture, food, history, art. I have been reading these forums and people are so knowledgeable - would appreciate any and all advice! Thank you.