"let me dream" is "laisse-moi rêver" in French ; ("laissez-moi rêver" when addressing several persons)
Dream land is "un pays de rêve" in French.
Beau Rêve = Beautiful Dream
To say "let's talk" or "let's speak" in French you would say parlons.
mon rêve
'le rêve'
notre rêve
In French, you would say "Parlons français" to mean "Let's speak French."
rêver un petit rêve.
"Let's not" in French is Il ne faut pas
Un mauvais rêve
un beau rêve
tu es mon rêve