How to share photos I take with iphoto 6s with my ipad mini 4

There are lots of ways of moving files.

These cloud servers may not be what you want on a trip, but it's good idea to back things up.

A simple and popular way to copy files and share files among your devices.

https://www.dropbox.com/

"Box lets you store all of your content online, so you can access, manage and share it from anywhere. Integrate Box with Google Apps and Salesforce and access Box on mobile devices" Rated the most secure cloud storage by SkyHigh Networks. You can buy a license to run box one of your servers.

https://www.box.com/

Files Connect -- "Cloud Storage services like Dropbox, MobileMe iDisk, Google Docs/Picasa, Facebook photos, FTP, SFTP, WebDAV ... AFS (Apple File Shares) SMB (Windows shares) protocols"

https://itunes.apple.com/us/app/files-connect/id404324302?mt=8

"Dukto is a simple application that allows you to share files between devices connected to the same (wireless) LAN network."

http://www.tidal.it/?page_id=309&lang=en

http://www.msec.it/blog/?page_id=11

"Transfer files the easy way, just drag & drop the file and we will handle the rest. Like Apple AirDrop, but works and on all major platforms and computers that don't support AirDrop. Apps are available for iOS, OS X, Windows, and Android."

https://itunes.apple.com/us/app/instashare-air-drop-transfer/id576220851?mt=8

You could look into Apple's airdrop.

"To share content with AirDrop, both people need one of these devices using iOS 7 or later, or a Mac with OS X Yosemite"

Use AirDrop to wirelessly share content - Apple Support

If both of you have seperate Apple IDs, as you should, and are using iCloud or iCloud Photo Library, you can use either Photo Sharing or Family Sharing to have access to each other's files. Sorry, I don't have any links accessible right now. Just search for those two phrases.

While traveling, you might want to set up your devices to sync/download only when you're on Wi-Fi.