Nestle recruited at my university. I was preselected for an on-campus first-round interview with one of the recruiters from Nestle. Within a week, I received a call and e-mail from Nestle indicating that I had made it to the second and final round at the Nestle USA headquarters in Glendale, CA. The final round consisted of a networking dinner, and then a full day of interviews the next day. There were three total interviews that lasted around 30 minutes each, and each one consisted of mainly behavioral questions with one "technical" question. For the behavioral questions, it is good to have a lot of examples ready. You'll run into a lot of "Tell me one time when..." questions. Definitely be able to at least answer the basics like why you want to work at Nestle, why you chose your major, and so forth.
The people I interviewed with all have great personalities. From my perspective, they are genuinely happy to be working at Nestle. One person I interviewed with in the final round had been with Nestle for 20+ years, and others were mostly between 10-15 years at Nestle. All of the recruiters are really helpful throughout the whole interview process. The Nestle building/office is very nice both from the outside and inside. The building is very much modern, and they had redone parts of the lobby and recently built a new gym inside the 21-floor building. The work culture seems to depend per department. Some floors seemed be to a little more loose than other floors, but I couldn't say for sure because I was only at Nestle USA for less than a full day. Nonetheless, workspaces and the technology both seem very modern.
The main thing is to have a lot of examples ready for the behavioral questions. I think that's one area where I could have improved on. Also, for the technical questions, make sure you think out loud and clearly. Ask questions if you have to, and don't overlook the obvious. Finally, let your personality shine, but don't overdo it. I'm sure the interviewers can distinguish between genuinely enthusiastic people and those who are not.