Margaret,
We bought a Bailey Senator series 5 Indiana in November 2006, it has the side fixed bed & the toilet & shower next to it.
We chose the Indiana over the Virginia, which has the central fixed bed, because we felt that the Virginia's layout "closed in" the interior of the van, but it did have a superior toilet & shower room. We figured that we spent more time in the lounge & kitchen area than in the bed or toilet, so that's where we wanted it to be bright, big & airy, it works for us, but it may not work for you
To go back to your question, yes with our chosen layout, you will get your feet wet if you use the toilet after someone has used the shower, if the non slip shower mat is still in situ and it has not been hung up to dry & the shower tray has not been "mopped" up.
The way I got over this problem was to make a "duck board" grating for the shower tray and place a bath mat outside the toilet/shower room. Any half decent wood worker should be able to make you on for a few