I am a full-time student. The amount of opportunities as a night-time or PT day student will depend largely on your work schedule. If you only work 20 hrs/wk, you will have more time to attend lunches w/ a guest speaker, etc. If you work 40 hrs/wk, then you won't have a lot of extra time for that stuff. Night students can attend day events. However, it is difficult to schedule guest speakers for night students. There are, however, some events for night students.
As far as the profs are concerned...some are awesome and some not so much. That's just how it goes at most schools.
You should seriously just enjoy your summer. Read a book for fun. Go out and party. Your first year is tough, but fun. Once you hit the spring semester of your second year, it is a lot easier.