Give the town its own half-day
Explore Óbidos without trying to fit every nearby coastal destination into the same morning. Choose a manageable walking route and allow time to stop. If anyone in your group has access needs, check the intended route in advance rather than assuming old streets or raised walks will be suitable.
Choose one shore for an afternoon
Use your accommodation and transport to pick the lagoon shore that makes sense. A single well-planned visit is often better than crossing the area repeatedly. Confirm parking or public-transport arrangements from current local information before leaving.
Reserve the second day for the conditions
Keep a lesson or another water activity flexible where the provider’s terms allow it. Ask when the activity decision will be made and what the alternative is. If it does not proceed, use the day for a coastal observation walk or a nearby town visit.
Make fewer reservations, more useful ones
Book the things that genuinely need a place: accommodation, a chosen lesson or a meal important to your group. Leave space around them. Keep a shared note with addresses, cancellation rules and return options so a change does not require everyone to search separately.