If you’re very local, the xc will be nice for quick spin, and I guess you may be able to tie it up with other stuff outside the park. If travelling far for just the xc, don’t. It’s a DH park really and the xc is a 15 to 30 minute loop perhaps.
Clay soil at Aston. Surface 2 Air is more all weather, but the rest is like an ice rink in the wet. The red DH (also is part of the xc) is the most lethal there in the wet. I can guarantee you won’t stay on the bike on the berms without full mud tyres and even then one trip the guys with muds said they were no use. Spikes perhaps required.
Ps you can get the day pass for a quid cheaper online, and I recommend it to support the development and maintenance, plus insurance of the site.