Thought we would share how we planned out their stay and what we altered with their input once here. Our son and his girlfriend are in their twenties. We covered about 40 miles of walking.
Day 1 altered since they were tired: Rossio Square, Rua Augusta Arch, Praca do Comercio, Cais do Sodre - Timeout market, pink street, and The Couch Sports Bar.
Day 2 planned: Sintra for Penha Palace and Quinta da Regaleira.
Day 3 altered since they were tired from day 2: Jardim Botanico de Lisboa, Principe Real Garden, Miradouro de Sao Pedro de Alcantara, Estação inclinada de Glória - São Pedro de Alcântara.
Day 4 planned: Boca do Inferno, Cascais, Carcavelos Beach, Belem Tower, Monument of Discoveries.
Day 5 altered since they were tired from day 4: Parque das Nacoes, Telecabine, Oceanarium.
Day 6 planned: Castelo de S. Jorge, Church of Sao Vicente de Fora and the Monastery, Military Museum.