GA4 + Google Tag Manager expert to set up booking (purchase) tracking for 2 hotel websites

We run three boutique hotel websites (WordPress) that book through the Mews booking engine. On one property, completed bookings and revenue already flow into GA4 correctly. We need the same setup replicated on the other two properties so we can see bookings, revenue, and conversion rate in GA4. Scope: - Set up Google Tag Manager on two WordPress sites (or use existing containers). - Configure GA4 begin_checkout and purchase events from the Mews booking engine data layer, passing booking value and currency. - Ensure cross-domain tracking works (website to Mews checkout). - Verify in GA4 DebugView/Realtime and confirm the purchase event fires with revenue. - Provide brief handoff notes on what you configured. We can provide GA4 access, the GA4 Measurement IDs, WordPress admin, and Mews access as needed. One property is already working correctly and can be used as the reference/template. Please share 1-2 examples of GA4 plus GTM ecommerce or booking tracking you have set up, and your estimated hours to complete both properties.