If you are planning to extend your stay beyond our wedding weekend here are some ideas for things to do around the area:

Lisbon:

https://www.lonelyplanet.com/articles/best-things-to-do-in-lisbon

Cascais:

https://www.lonelyplanet.com/portugal/lisbon/cascais

Sintra:

https://www.lonelyplanet.com/portugal/lisbon/sintra

Colares:

https://www.tripadvisor.co.uk/Attractions-g189155-Activities-Colares_Sintra_Municipality_Lisbon_District_Central_Portugal.html