Well I can't give you any suggestions as my wife and I just bought into it last month and have not had our first visit to disney as
DVC members as of yet.
However, there are a few DVC booths in each of the parks and one in downtown disney. The people are very nice, and no they are not pushy.
You just walk up and let them know you would like to talk with a guide, or you can always ask them any questions you have. They will fill out a quick (30 second) form making you an appointment for you to see a guide at the BoardWalk Villas at some time during your stay.
They will send a van to pick you up from where you are staying and the driver will walk you to the meeting with the guide. After the meeting, about 45 minutes if you do not purchase (approx. 2 hours if you do), the van will take you right to the front of whichever park you choose to go to for the day. They even gave us a few extra fast passes but we did not need them as it was Sep.
Anyway the guide will stay with you as long as you are interested. He was very nice about it.
I would say if you are interested in buying into DVC it is worthwhile.
However, you have to understand there is nothing more worthwhile than the testimonials of happy customers which is why we bought. Well I better rephrase. That is why we didn't cancel after we got home.

We had thought about it but then found this board and read many many posts.
From what I have read if you aren't big on Disney this isn't a good buy. It isn't a good investment that will bring a return later as it is good for only so many years so every year that goes by is one less year you can eventually sell to someone else.
From other things I have read if you don't mind staying off of Disney property it may not be a good buy for you as you can buy an actually owner based timeshare that you will always own. However, if you are like my family and love to stay right in the middle of the magic it is a great buy.
When we go to Disney we like to stay right there. Be able to get up at 8:30 in the morning and walk out to the bus. Catch one 10 minutes later to the park we want to go to and are there 10 minutes later. Then take a bus later from that park to another park and from there to downtown disney and then back to the resort we are staying at. I think it is great.
I hope that helps.