Frequently Asked Questions


When is EMAG 2023 going to take place?

The date is set to August 2-6. Save the date!

What is the main venue of EMAG 2023?

The main venue is the World Trade Center. This is where most lectures and workshops will take place. Furthermore there will be plenty of room to meet, chat and play games with fellow Mensa members while enjoying a drink.


When can I buy my tickets to EMAG 2023?

You can reserve your ticket today! Please make the payment within one week to secure it, otherwise you will lose your spot! Early bird discount is valid untill March 31 23:39, please make sure to first register and after that select the Early Bird discount.

How can I register for the event and the program? 

The first step is to create an account and log in. After that you have options to register for the event, book hotel rooms and sign up for the program items. 

Where should I stay? 

We have worked hard to make deals with hotels in Rotterdam, to be able to offer you the best possible price. You can find the deals in the accommodations section. When logged in, you can book your hotel room directly, so that you benefit from the deals we negotiated for you. 

When will the program items become available for sign up? 

We are still working on making a great selection of lectures, tours, visits and much more and want to complete that before opening the entire program for you. We will let you know as soon as the program becomes available for sign up.

Bringing guests and children

Can I bring my partner and/or children?

Yes, you are very welcome to bring your partner and children! We will have several activities that are suitable for children and families. You can add your partner and children as guests on your account, so that you can manage their registration and payments all in one place. Make sure you also book and pay a reservation for your guest(s). The registration fee for children is automatically adjusted for their age at the time of the event. In case your guest wants to manage and pay their own registration, they can create their own account.

My guest is not a Mensa member. What should be entered in the membership number field?

In the membership number field, you can enter '+1' and your own membership number.

I am not on the list of participants or my guest is not on it.

Make sure you and your guest are both registered by selecting each name one by one in the top right selection field, choosing Registration on the right menu and checking the registration check box.



How can I edit my personal data?

In the participant profile you can find the personal details that you entered during registration. You can edit the information here if needed. Your email address can not be changed. 

How can I delete my account?

To have your account deleted, send an email to

Why do you need my date of birth?

We have different prices depending on your age on the first day of the event so the day of birth is important to fill in accurately for children. If you are an adult the exact day is of less importance so if you feel uncomfortable sharing that with us, feel free to just enter 01-01 and your year of birth.


How can I pay?

When logged in, you can find a list of items you need to pay for under Summary. If you click on Payments, you can pay the amount that is due. The payment system, Buckaroo, supports several payment methods. If your preferred method is not supported, you can transfer the money using wire transfer. Make sure you pay within the indicated time, so that you are sure of your spot. If the payment expires, the reservation is released. Furthermore, note that the costs of the wire transfer should be covered by you. If you pay from outside of Europe do not share costs (SHA or BEN). Alternatively, add 0,1% to the amount you pay with a minimum of € 10,- because our bank will deduct these costs for payments received from outside the IBAN system. Your registration will only be valid when the amount received by us covers the cost. 

How can I pay with my creditcard?

You van pay with your credit card by using the PayPal option and instead of logging in select the Pay as guest option. 

I cannot make a payment in any of the presented ways, what can I do?

If none of the payment options suit you, please send an email to and we will try to help you with this. 

What happens if I accidentally paid too much?

The money will remain on your profile balance, so you can select additional program items if you want. The remaining balance will be refunded in the week after the event.

I have payed but in my account it does not show, how is that possible?

It can take up to 48 hours before payments are processed depending on the payment method so please check again after two days.

My question is not yet answered

If you can’t find the answer to your question, please send an email to