I’m not going to make judgement on the pre-season organisation but I’m not sure you should be taking the risk of playing in areas where it could be called off due to weather.
Theses games are important.
We have three more friendlies before the season starts. There's also a gap after the game on Wednesday until the next friendly game on Aug 6th. If needed an extra game or two behind closed doors can be arranged.Lets just hope it doesn't fudge up the preparations for the season. We don't want to be undercooked at the start of the season.
As @Grays_1890 said the sports science team will know exactly what is needed fitness-wise.