I've seen the plans and R2 is definitely earmarked as a parking lot. Expect some congestion and delays on that day.
The plans for handling and parking are certainly ambitious but considering the Heath-Robinsonesque ideas used for parking guidance used in T2 (traffic lights requiring a human who is qualified to operate them) and T1 (mirrors and contortions), visitors to Wythenshaw Municipal on the 28th are going to find it 'interesting' to say the least.
As for the rest of us who have to operate regular scheduled flights, don't expect anything different from a normal day with single runway ops. The guys and girls in the tower will no doubt provide their usual excellent service, hampered only by ground ops jobsworths trying to dictate nonsensical directives in order to justify their employment.