Someone please tell me I'm not paranoid about this....

So every summer we have a camping trip on an island on the Mississippi.

It lasts four days and nights. It's in the middle of August when it's sweltering hot, and there is no real protection except for being baked alive in the tents and swimming in the Mississippi.

So, this time during the summer, if everything works out well, we should have a 4 month old. Along with SIL and Bils one and a half year old.

My SO seems to think that instead of going across the Mississippi on two canoes and two kayaks strapped together with bungy cords and plywood, that we should rent an RV for 8 people.

Now, I'm very thankful we aren't going across the Mississippi again and just going to a campsite, but 8 people. In an Rv. With 2 twin bunk beds. And one queen. With a four month old. And a 1.5 year old. And all our gear. And 2 dogs..........

Doesn't it seem a bit... oh, idk... cramped?

I suggested that we rent a cabin on the water with 3 rooms, a bathroom, and kitchen set up, for $75 a day. But no. He wants an RV. Already booked one. For $220 a day.

Can some please give me more examples as why that is a bad idea? I've tried telling him that well need 2 seats for 2 car seats at the very least but he doesn't hear it. That and his mother nor his brother like RVs, and that they don't consider it real camping, and I've told him without a fridge (milk), microwave (our bottle cleaner), and electricity (breast pump) baby bean and I aren't going, and if we aren't going, he can't go, (I'll need the only vehicle we have incase something goes wrong.)

Sil and Bil both are thinking of bringing their own tent and having the 1.5 year old stay with us in a cabin, which would be fine because of thick walls, so no baby yelling would wake him.

But it doesn't seem to phase him whatsoever.

And we can't drop off our baby with family because they'll all be on the trip in a different vehicle.

Any ideas how to get it through to him, or am I being paranoid.

Pictures of how we got across the Mississippi last year.