The BoxCaster HDSD2 and the BoxCaster Pro both have the ability to both connect via wifi BUT streaming via hardline is always FAR preferable. However, if you have no other options, follow the steps in these 2 articles to connect your unit to Wifi.
BoxCaster HDSD2 or Pro - How to Configure your BoxCaster for Wi-Fi
Note: A password secured wifi connection is recommended. Using a publicly accessible Wi-Fi connection can lead to bandwidth issues that will affect your video stream.
If you have absolutely NO connection in the venue but there is a connection close by then you could consider using something like the device below to get a signal to the BoxCaster.
- Airgrid Point to Point Dish: These dishes do require some initial configuration BUT they are able to beam a reliable signal over a long distance (hundreds of yards).