What size are the swim jackets at center parcs (longleat?)

[TravellingToad]

We are off to longleat and I remember there being 2 sizes of swim jackets. Will there be a size small enough to fit an average size 12 month old? Just trying to work out if we need to pack our own.

Think they will be too big.
iirc, slim 2 yr old DS2 wasn't really big enough for the smallest jacket, and very slim DS1 at 4 was OK in the smallest.

oh crap. More stuff to pack :( and we're flying not driving so have to squeeze it into a limited number of suitcases!

Do toddlers have to wear swim jackets, even if they are just going in the toddler bit of the pool?
Just been looking at website and it's says buoyancy aids must been worn and are provided - by buoyancy aids do they mean the jackets or do they also have other types?