That's about it, getting a ticket, getting in free. If even, I wouldn't assume... The only free tickets I know has been with local teams that gave free tickets to people that did stats, etc. So they got in free but worked the event, which could be a lot of fun and a good exchange of free tix and fun work.
To me it seems like you will be issued a photo pass and will be allowed access to a designated area to take photos for the first three songs. The publication will be able to use your photos for their publication or on their website. The band and venue seem to have the rights to usage.
Usually a photographer would be able to use what was always referred to as a 'tear sheet' to show their photos that were published. For example, I had a photo published in a local team's brochure years ago and a copy of the brochure with my photo in it is a 'tear sheet'. I think it would be similar to someone's photo being published in a magazine, ad, etc.
This doesn't seem to address anything like that or allow for your usage of the photos in your portfolio. I suppose you could share a link to their website on your social media like people do on their blogs and social media with any website that's 'out there'. If they publish your photo with a photo credit that would show it was your photo. Otherwise I'm not sure how you would show it was your photo that was used.
This looks to me like it could provide an opportunity for experience shooting for a short time and provide access to what could be an area closer to the stage and off limits to the public. Other than some experience and maybe a free ticket I don't see you being able to use the photos you take.
What I dislike about this is not having anything that specifies usage other than it would be in their publication or on their website. It doesn't seem to indicate for how long they can continue to use your photos, or if your photos will be accompanied by a photo credit or not.
I'm not sure if it would be worth it unless you want to go to the concert and this gets you in free. If getting experience is what interests you I'd think about finding local community concerts that are open to the public and where attendees are allowed to bring cameras and take photos. That might allow for you to take photos for experiece and maybe for your portfolio.