Long story short... FIL lives in small harbour side town on south coast. There is a walled off tidal pool, with a promenade walk way which we've witness children practicing sailing in previously.
Visiting FIL for Father's Day, 2.5 hour journey by car, happy to do so, relationships are good.
He's been keen to take the children out on his two man sea kayak and small dinghy with a motor for a while. I've never really been keen - kids are 4 and 6 now so I felt too young last year to either appreciate it or do so safely.
DH and children had to go without me Fri night as I had to work Sat morning.. then follow on by train, length of trip meaning I didn't arrive until 1600.
Before going I had a chat with DH and said very clearly that I was only comfortable with him taking the children on such a small boat within this walled harbour area and organised wetsuits for them to go. I even said to him I would consider it a serious breach of trust if he ignored my wishes. Also mentioned in a text to FIL re organising wetsuits that I wasn't keen for them to go in open water.
So yesterday I arrive (Sat) the kids meet me at the train station with DH, have already been out on the boats. First thing my daughter says was 'Mummy it tipped up and I drowned'. Clearly she hadn't actually drowned! But it turns out on questioning my husband they went out in the main harbour because it was too far to walk to the walled in bit. He then said he didn't know what I was taking about about the walled in bit anyway and was generally snotty/ignorant about it.
Turns out they went out in the general harbour area, not where I asked. In the dinghy at first which did not work (motor issues), had to row it back. Whilst FIL went back for oars husband had to secure the boat by hanging off an abandoned vessel in the harbour (for long enough that's he felt his arms might fall off - his words) with two kids bobbing about in it. Then they tried the kayak and managed overload and overturn it. Thank god they had buoyancy aids on. Kids like water but not competent swimmers (weekly lessons, but daughter still in little pool). Not used to the sea. It was cold & choppier than they thought it would be, but they continued. They failed to do something up properly on the kayak and water got in so apparently 'not their fault' it was overloaded. Kids a bit upset by the shock of falling into the water but the adults shoved them back onto the kayak and had to swim in back to shore. Got them back safely but I feel by luck rather then judgement.
Not a good introductory experience for the children. I told my husband that I was cross he'd ignored my wishes but didn't wish to spoil the weekend.
Then it turns out FIL spent the afternoon fixing the motor so they can go back out today. I've just said no. Kids not even keen, yesterday put them off. Son (6) said to
Me 'daddy lied and said we were in the safe harbour bit you told us about'.
AIBU? DH now has a strop on because I've 'embarrassed him' and don't trust him and his father enough to take the kids out safely.
Alternative is we leave early as I'm sticking with no today, it's horrible weather and I don't trust them to stay in the safe area - so left it as his choice.
Am I being unreasonable and spoiling their fun? I'm not a sailor or water goer so outside of my comfort zone.