I'm sure it is easy if I knew what to do:
here are the attributes in the cart
<p> <label>Child's Name</label>
<input id="childs-name" type="text" name="attributes[childs-name]" value="{{ cart.attributes.childs-name }}" />
</p>
<p> <p class="field">
<label>Teacher's Name</label>
<input id="teachers-name" type="text" name="attributes[teachers-name]" value="{{ cart.attributes.teachers-name }}" />
</p>
<p>
<p class="field">
<label>Delivery Instructions</label>
<input type="radio" name="attributes[delivery-instructions]" value="Deliver to the school (orders received by 12/1)"{% if cart.attributes.delivery-instructions == "Deliver to the school (orders received by 12/1)" %} checked{% endif %} /> <span>Deliver to the school (orders received by 12/1)</span><br />
<input type="radio" name="attributes[delivery-instructions]" value="Pick up at Big Frog (1141 Brook Forest Ave.)"{% if cart.attributes.delivery-instructions == "Pick up at Big Frog (1141 Brook Forest Ave.)" %} checked{% endif %} /> <span>Pick up at Big Frog (1141 Brook Forest Ave.)</span><br />
</p>
What I have set up in the email notification is (really don't know how to do the delivery instructions
Child's Name {{childs-name}}
Teacher's Name {{teachers-name}}
Delivery Instructions {{note}}
Really appreciate your help