What’s the suggested attire? Emmanuel Bielonwu Updated April 06, 2019 22:11 Follow The dress code is business casual. We suggest that you bring a jacket or sweater, as some of the meeting rooms may be cold. Related articles Will I have Wi-Fi access? Do meals come with my registration? Will I be able to get a headshot photo at ATD 2019? How do I download the conference app? Is there a luggage or coat check?