The hotel has a 17€ menu for lunch and dinner. This is the same one included for people with half board/full board. For breakfast you can have a normal breakfast in the hotel but the buffet breakfast will only be for people who hired it or until they run out of spots for the day. Check out the menu here:
https://islagarenaresort.com/baile
Delivery
You have Uber Eats and Glovo to deliver to the hotel.
By walk
There is a small shopping mall 10 minutes walking from the venue with local bars and restaurants:

And 20 min away there is a Burger King, KFC and Foster’s Holllywood:

