Awaii
Use Awaii as the shared planning home: collect ideas, decide together, build the itinerary, add booking links and documents, make packing lists, and track shared expenses.
Awaii should be the home for the trip: ideas, stays, links, bookings, documents, lists, expenses, and the itinerary. Then use focused apps for the moments they do best, like routing, booking, flight alerts, and translation.

Summer trips move quickly. People are choosing dates, comparing stays, saving beaches and restaurants, watching flight changes, checking routes, translating menus, making packing lists, and splitting costs. The mistake is letting each app become a separate source of truth.
The cleaner setup is to keep the trip in Awaii, then link out when a specialist app is useful. Save the Booking.com stay link in Awaii. Open Google Maps from a planned place when you need directions. Keep packing and reminder lists inside Awaii so they stay attached to the trip.
Use Awaii as the shared planning home: collect ideas, decide together, build the itinerary, add booking links and documents, make packing lists, and track shared expenses.
Use Google Maps for directions and routing. From Awaii, open a place directly in maps when the group needs to get there by walking, driving, public transit, or rideshare.
Use Booking.com to search and book stays. Add the stay, booking status, documents, notes, and Booking.com link back into Awaii so the group can find it inside the plan.
Use Flighty for flight visibility and alerts, especially if your summer route has tight connections or people arriving from different cities.
Use Google Translate for quick language help on the ground, especially camera translation and offline language packs for menus, signs, and check-in instructions.
Awaii can track and split trip expenses inside the plan. Splitwise is still useful if your group already uses it for ongoing shared costs outside the trip.
Most summer trip confusion starts before anyone needs a map or flight alert. The group is still deciding where to go, which weekend works, which stay feels right, what activities are maybes, and what belongs in the final plan.
Awaii keeps those decisions, links, itinerary items, packing lists, documents, booking status, and expenses close to the trip itself. Google Maps, Booking.com, Flighty, Google Translate, and Splitwise can still do their specialized jobs, but Awaii stays the place everyone returns to for the current version of the trip.
Save ideas, decide together, and keep the shared itinerary flexible until the trip becomes real.