Entering airside lounge (past security) without a ticket/boarding pass

[zow]

Is there any way I could access the Admiral Lounge in Terminal 2A in CDG (airside, past security) without a same-day ticket/ boarding pass? (That is, arriving on Air Canada from Montreal, to visit Paris.)  If I need a ticket/boarding pass, is it a crazy idea to purchase a fully refundable ticket, get a boarding pass, go through security, enjoy the lounge, and then cancel my ticket? (Will it still be refundable after I get my boarding pass?)

Thanks.

[henche]

Yes.

[ShlockDoc]

Intl travel is different, but I regularly buy refundable domestic tickets so I can accompany family to the gates... 

[Aerial Dag]

Intl travel is different, but I regularly buy refundable domestic tickets so I can accompany family to the gates...

Is there a preferred airline?

[ShlockDoc]

Is there a preferred airline?

It depends on where you are trying to get into.  If you have a Southwest boarding pass but there are no Southwest gates beyond that security position, you may have trouble getting past the screener. 

[mileagejunkie]

Yes, I usually check what airlines fly out from the terminal, look at departing flights and book a fully refundable fare on the last flight of the day and cancel it after leaving the airport.

[knowitall]

Are there any airlines that don't let you refund a ticket if you already printed a boarding pass?

[zow]

Thanks, everyone, for the responses.