Are child nodes allowed in RSS Description element?

I would like to add child nodes to the description element in an RSS feed. I can't seem to find any definitive information that indicates it is either allowed or not.

The declarations are:

?xml version="1.0" encoding="ISO-8859-1"?

rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom

The current feed looks like this:

<item>

<title>Whatever</title>

<link> Whatever </link>

<guid>whatever</guid>

<pubDate> EDT</pubDate>

<description>

<b>Start Date:</b> Dec 12 2012 7:00PM<br/>

<b>End Date:</b> Dec 2 2011 7:00PM<br/>

<b>Location:</b>Wherever<br/>

<b>Event Type:</b>Type<br/>

<b>Description:</b>

</description>

</item>

What I would like to do is this:

<item>

<title>Whatever</title>

<link> Whatever </link>

<guid>whatever</guid>

<pubDate> EDT</pubDate>

<description>

<start><b>Start Date:</b> Dec 12 2012 7:00PM<br/></start>

<end><b>End Date:</b> Dec 2 2011 7:00PM<br/></end>

<location><b>Location:</b>Wherever<br/></location>

<type><b>Event Type:</b>Type<br/></type>

<desc><b>Description:</b></desc>

</description>

</item>

This would essentially create child nodes of the description element. Would this break readers if I did this? The reason for this is to more easily extract elements out of the <description> node.