Q: I want to access my camera roll photos and photo stream on my Mac book that I have on my iPad

Enable iCloud Photo Library and Upload to My Photo Stream under Settings - iCloud  - Photos on your iPad.

Make sure you're signed to to the same account on all of your devices.

iOS: Importing personal photos and videos from iOS devices to your computer

Well, the Internet connection speed is a key thing in this situation.

When do photos and videos upload to iCloud Photo Library?

When you turn on iCloud Photo Library on your iOS device or Mac, your photos and videos will upload after you connect to the Internet with Wi-Fi and your battery is charged. You can see the status and pause the upload for one day when you follow these steps:

• On your iOS device, tap Settings > iCloud > Photos.
• On your Mac, click Photos > Preferences > iCloud.

Depending on your Internet connection speed, the time it takes for your photos and videos to appear on the Photos app on iCloud and all of your devices might vary. Make sure you turn on iCloud Photo Library on each device.

iCloud Photo Library FAQ - Apple Support