As a big rugby fan (did you mention Leicester
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
?) go and have a great time. You're very lucky indeed to get that sort of access - both to pitchside and players.
Rugby is a relatively small sport compared with football, but still has a good following, including online. Why don't you approach some of the online publications who probably don't have a meaningful budget to pay for "proper" photos -
therugbypaper, planet rugby etc. with some of your photos and see if they're interested in them. The only other comment I'd make as a hobbyist myself is: if you're not doing it for profit then please don't get in the way of others who are... this is people's livelihoods we're talking about here.