Dear @ASTRAEA,
Nobody will take care of us, we have to tace care of ourselves. When and if we travel we have to keep everything in mind-if we are on medication is it strick times to have it etc.
In relation to the fringe-nearly every hotels has a little fridge. If you need water-you can always have a bottle with you wherever you go (this is what so many people do not to get hydrated), in relation to the food- even celiacs etc have a places that can enjoy it, and you can always contact the catering place and order something special-to your needs and requirements,usually these places are more that happy to help you.
People do solo traveling,people travel no matter what their age, people travel wiht kids and toddlers etc
As long as you feel ok...and if you want, there is always a way to solve any issues.
Have a good day!