Wash the veggies and then sit down at the dinette to do your prep. Works for other food items as well. Covers for sink are standard to get more space. A hole allows scraps to be dumped out of the way or prep silverware to be moved to sink for later washing. Generally, some process development can reduce the amount of space required to make meals. One pan can do duty for cooking multiple items. The use of the microwave can give you parallel cooking/heating options. Salads with cold meats make for healthy meals. It's not always about how much you have, but rather how you use it.
Travel safe. Hope to see your smile down the road.