You could send an email, see if practice is open.
http://guyrancourt.com email is here
Another link to look out for closer to Friday
https://www.facebook.com/USAEastCoast and
https://mobile.twitter.com/East_Coast_BBC
If I am reading this right, according to this Facebook post from June 18th, from your link above, it is open to the public.
USA East Coast
June 18
USA EAST COAST ALL-STARS FEATURE PLAYERS FROM SYRACUSE ORANGEMEN, MARYLAND TERRAPINS, SOUTH CAROLINA GAMECOCKS AND ARKANSAS RAZORBACKS WITH COACHING STAFF FEATURING UNIVERSITY OF SOUTH CAROLINA HEAD COACH FRANK MARTIN IN 2014 FOUR NATIONS CUP IN ESTONIA
For the 9th year since 2006, founder Guy Rancourt’s USA East Coast basketball team (formerly East Coast All Stars) will travel to Europe to compete against foreign national teams consisting of NBA players and Euro-League All Stars. Rancourt’s team has accepted an invitation by the Estonian Federation to participate in the 2014 Four Nations Cup. A roster and coaching staff comprised of personnel from the nation’s best college programs will hold training camp at Columbia University in New York City for competition in Estonia and Finland July 31st to August 8th.
The 2014 USA East Coast will include Mike Gesell (Iowa) and Ty Johnson (South Carolina), both starting point guards at their respective universities. On the wings the 2013 East Coast selections Rakeem Christmas and Mike Gbinije will be
team will have sharpshooter Dusty Hannahs (Arkansas), great resources for 2014 selections BJ Johnson and Tyler Roberson
SEC star newcomer Sindarius Thornwell (South Carolina), versatile scorer BJ Johnson (Syracuse) and athletic defender John Monkam (Lycoming). In the frontcourt USA will turn to a physical and talented group in Tyler Roberson (Syracuse), Damonte Dodd (Maryland), Granville Gittens (Baruch), and Adam Woodbury (Iowa) in the frontcourt.
US East Coast will turn to a coaching staff with extensive international experience. Rancourt (Lycoming College, Head Coach) has taken teams overseas since 2006. Frank Martin (South Carolina, Head Coach) has served as an assistant with the USA National Team the past two years. Mike Jones (DeMatha Catholic HS, Head Coach) has been with USA National Teams since 2010. Dave Cooks (Concordia University Wisconsin, Assistant Coach) has experience at all levels of basketball in the US. John Andrzejek (Columbia University, Director of Operations) will oversee day-to-day activities.
The US representative in the 2014 Four Nations Cup, USA East Coast will hold a two-day training camp on the campus of Columbia University on July 31st and August 1st. All USA East Cost players and coaches will be available for interviews with the media on both days of training camp. Training camp is open to the public. Media requests can be made via email to Rancourt@Lycoming.edu and/or CaputoMedia@gmail.com
In conjunction with Anthony Travel Inc. and Moneyball Sportwear Inc. USA East Coast will arrive in Tallinn, Estonia on August 2nd. USA East Coast will compete against the National Teams of Estonia and Slovakia with a talented French team rounding out the Cup field. Games will take place on August 4th, 5th, and 6th. The morning of August 7th USA will ferry across the Gulf of Finland into Helsinki to play a friendly match against the National Team of Finland before returning to NYC on the 8th.