We have one very similar, the Sevylor 2800 2 person inflatable kayak. Great deal at Dick's, it must have been closeout b/c I can't find it online. It even came w/ two aluminum/plastic kayak paddles.
My wife likes it to poke around the coves near us w/ one of the kids. Nice b/c takes up much less room in the garage then a rigid kayak. It is definitely bathing suit as water drips from the paddles into the kayak as you paddle. The sightly raised seat helps a bit.
You are very low to the water obviously and stability is okay, but as mentioned balance is still a bit touchy. No sudden moves and not a lot of heavy cargo...to make you even lower. I believe stepping/climbing out of a wider dinghy/zodiac to a dock to be a much more stable experience than stepping out of one of these. Getting out at a dock is much trickier than a shore landing. 1 adult and 1 kid seems perfect. Wife and I haven't gone out together so can't say for sure about 2 adults.