Event organization (concert/party)

Dear, I am gathering bids and offers for event/party organization in Dublin. If possible 2 day concert on different locations. Would like to rent venues for 500+ people. If not please send max No. of visitors. Also in need of services like bars and security if included in your current work. Out sourcing bars and security is an option. Legit and serious offer please, abiding all EU and Irish laws. Thank you in advance, Petar