If I delete my photo stream photos off of my iPhone will they also delete from my photo stream on my MacBook Pro? If so how can I ensure that those photos are saved?

They will not be deleted if they have been imported to your iPhoto library. To ensure this happens automatically, go to iPhoto>Preferences>iCloud and check Automatic Import:

To confirm that they have been imported to your library, click on iCloud on the left sidebar of iPhoto, open your My Photo Stream album on the right, then Control-Click on your pictures. If you see "Show in Library" in the pop-up, the picture has been imported to your library and you can safely delete it from photo stream.

do i need to be on wi-fi for the photos to go to iPhoto?

I'll be away on a trip and want to be sure my photos go to iphoto on my imac at home so I can delete photos on my iPhone to have more space.

If I do as you are suggesting if I delete the photos from camera roll AND my photo stream will I still have the photos in my iphotos when I return home?

Hi,

Can I ask if I delete my photos off my Macbook pro, will they also be deleted off my iCloud?