FAO is the regional hub for the Algarve and is approximately 20 minutes from the wedding venue. Unless you want to explore Lisbon before or after the wedding or are coming from the US and want to minimise layovers, we recommend flying to FAO, which has many daily flights to and from the UK and Ireland, as well as many other major European airports.
LIS is approximately 2 hours and 30 minutes from the wedding venue and has the most nonstop flights to and from the US and Canada, with frequent flights on TAP (EWR, IAD, JFK, MIA, ORD, SFO, YUL, YYZ), United (EWR, IAD), Delta (BOS, JFK), American Airlines (PHL), and Air Canada (YUL, YYZ). Lisbon also has many flights to and from most European destinations.
It's possible to take a train from LIS to Faro, but we recommend hiring a car and driving for simplicity, and also so that you can make the most of exploring the Algarve.
In Faro you can get around easily with Uber, though you may also consider hiring a car if you'd like to explore the area. We recommend using Zit Auto for those wanting to hire a car.