the St. Louis Zoo is inside the city limits of St. Louis proper so OC is out of the question, but their website says nothing of any firearms regulations, so it looks like CC is acceptable.
Zoo Policies For the safety and welfare of our animals and visitors, the following are prohibited:
Your cooperation with these rules is appreciated.
- Smoking is prohibited, except in designated smoking areas (see map for locations)
- Dogs or other pets (service pets are permitted)
- Feeding the animals
- Entering non-public areas
- Bicycles (racks are available at entrances)
- Skates, skateboards, roller blades or scooters
- Loud radios
- Distribution of any advertisement, circular or handbill, or solicitation of funds or pledges of contributions within Zoo property
- Personal video and photography are permitted, provided they don't interrupt the visitor experience for others
- Student/commercial filming must be approved by the Zoo's Public Relations Department in advance
i can't find much on MO Rest Areas. as for sleeping there, since the truckers do it all the time, why not you? i used to back in "the day", read 1980's. i would also assume that they abide by the MO law so firearm possession should not be a problem. notice i said "assume". here is the link to the Eagleville Rest Area, the first one you would encounter should you enter MO vis I-35 south. http://www.modot.org/services/travel...leville_sb.htm
here's the link to the Missouri State Parks website for you to look thru. as for privately owned campgrounds you are on your own, though KOA seems to be rather abundant. http://www.mostateparks.com/
hopefully some of this information will prove useful.
enjoy your trip through MO!