{% if invoice.registration_fee_amount %}
<tr id="invoice-registration-fee-row">
  <td>Registration fee</td>
  <td>{{ invoice.currency_symbol }}{{ invoice.registration_fee_amount|floatformat:2 }}</td>
</tr>
{% else %}
<tr id="invoice-registration-fee-row" style="display: none;"><td></td><td></td></tr>
{% endif %}