It seems that for the fields you are interested, both are relatively equal in terms of offerings and opportunities, with Cornell perhaps having the slight advantage in some areas. William & Mary will have a slight advantage in terms of class sizes and teacher-student interaction because classes are much bigger in Cornell, which is something you should consider if you want to go to grad school.
History: William & Mary has the advantage here being the second oldest college and having access to a wide variety of resources being next to a living history musuem. It has partnerships with the NIAHD program, Native American history programs, Monticello, and more.
Creative writing: Both seem to be equal in terms of offerings, both as minor programs.
Psychology and English: Don’t know enough to comment, seems to be strong in both.
Film Studies: At William & Mary, film studies is a major and at Cornell it is a minor. However many of these film classes are theoretical in nature, although a few production and capstone classes are offered. Also I don’t know what is offered at Cornell, but at W&M they have a media lab where you can check out cameras, DSLRs, video equipment, 3-D printers, pianos and keyboards, laptops, 360 cameras, etc for free from the media lab.
Journalism: I will give this one to Cornell. Depending how stressful this might be for you as a journalism student, M-F daily journalism does sound more impressive than a weekly newspaper. However neither seems to offer journalism classes as an undergrad program. William & Mary, though to its credit, offers a unique seminar called the Sharp journalism Seminar where if you get in you can write for the Pulitzer Center and get a travel grant to do journalism anywhere in the world. I am doing this next year and I have had friends travel to Hawaii, the Gambia, and Uganda to cover under-reported stories. I do not know if there is an equivalent offering at Cornell.
Since you are posting this on the Cornell forum, you will likely get many more people familiar with Cornell on here. As a person from William & Mary, here are just some of my insights. I agree with monydad that your experiences will be more important necessarily than “connections,” so choose based on experiences and fit. But alumni networks can be helpful for learning about fields and getting your foot in the door, depending on the nature of the field.