GF,
I guess the other issue for Wizz may be diminishing demand for Polish flights as the effects of Brexit continue to unwind and so there are too many seats in the market driving revenue down.
Generally I reckon (with absolutely no inside knowledge) that theres a degree of bravado within the airlines and tour operators for S24. The higher cost of mortgage, rents and energy has to make spare cash for holidays squeezed. We are close to that time of year when IT consolidation used to take place in weak years and it wouldn't in the least surprise me if there were some capacity cuts, certainly early season. Not particularly BHX but more generally.
Hope I am wrong!