u/External-Sale5283

My dad has prostate cancer T3N1, he underwent surgery in February and now will have 8 weeks of radiation . We are planing 10 days trip to a beach vacation,3.5 weeks after his last session .would it be ok for him to travel on 5 hour flight and spent time at the beach?
Also is it ok to skip two- three days during radiation and add it at the end , he has to travel to another city for work? My mom is super worried and thinking that we should cancel our trip while dad wants to go, seeking for advice?