Hey Didispunk!! Welcome and good luck for your VBAC!!! I will answer these questions best as I can from the reading I have done so far!!! We are due a couple of weeks apart - do you know which hospital you are going to??

I would like to know.. what is normal? How many Days overdue will they let you go? I think it depends on the hospital - some are keen to book in a c/s on your due date- others will let you wait and see- definately speak to your carers about the hospital policy on this one.
Can you use the dripDo you mean the syntocin/induction drip? In that case the answer would be no as there is a much higher chance of your scar rupturing if you are medically induced.
What happens if you dont go into labour on your own? Will they induce at all?They may try things like the gel (I think) or a stretch and sweep but not a medical induction with synto.
Can I say no?It is always your choice hun, and it is your body so yes you can, but you want to ave strong support people around you and it is good to let your carers know your birt intentions from the beginning - write a birth plan covering everything to go through with them!
Can i get in the bath?Depends on the hospital - most will want you to have continuous fetal monitoring, at my last hospital when I was induced I was able to use mobile monitoring and use the bath but not all places have them
What % do i have of succesful VBAC.. Im not sure what the % are plus Im not sure if you develop PE again what will happen - again your hospital will be able to answer better than me.

I recommend you speak to them about all of the questions that you have and find a hospital that will support you. I changed from BH to Mercy for this reason and have found them to be fabulous so far.

Good luck with it all and ask any questions you like! Hopefully if Im wrong about any of this someone will pop in and set me straight!