Walk a small central circuit
Start near the river, explore both sides and group the uphill heritage stops into one part of the day. That avoids repeated climbs and leaves room for an unhurried meal. If the group has mixed interests, agree a central meeting point while some people visit an interior or walk farther.
Look at paving and gradients when assessing the route, especially with a pushchair or limited mobility. A small historic centre can still require effort between nearby places. Ask about specific entrances where useful and choose the version of the day that everyone can enjoy comfortably.
Plan the island boat as its own journey
For Tavira Island, establish whether you are using a town departure or reaching Quatro Águas first. Include that access stage in the day, then keep the return arrangements available before heading along the sand. A boat transfer and a guided lagoon tour serve different purposes.
If an outing involves Terra Estreita, the starting point is Santa Luzia rather than simply another Tavira landing. Choose the service and departure village together. Keep bags manageable for boarding and allow time to walk back to the quay without making the last part of the day a rush.
Reach Barril from the right side
The Barril outing begins with the route to the footbridge near Pedras d'El Rei, then continues across the island on foot or by small train. A car or taxi gets you to the approach, not directly onto the beach. Use the named access when arranging a drop-off or pickup.
Combine the outing with Santa Luzia if that suits your interests, but leave enough time for both rather than assuming they are one quick stop. For accessibility needs, use the municipality's detailed Barril information and ask about the particular assistance required. The complete route matters more than any single transport stage.
Use rail and road selectively
CP's regional line can support town visits along the eastern Algarve. Choose a main destination and check its return service before setting off. Look at both Tavira and Porta Nova in relation to your address so station access does not become an unnecessary extra walk.
For rural places or several scattered stops, a car or arranged excursion may suit the itinerary better than multiple public connections. Keep those trips on selected days and enjoy the ordinary central routine on foot. Save return details offline, leaving enough margin to finish each outing comfortably.